Game Masters, Beware! Fun system for Players that is ripe for abuse!

I read the glowing reviews from Endzeitgeist and thought, wow, this will be a neat system for the players. Little did I know that the players would take literally every opportunity to abuse this system that they could. They will take abilities that chop up their action economy and have them acting through and literally on top of every other player’s turn in the game.

The system itself is quite creative. It uses a power points system that moves away from what smarky players like to call “Vancian Casting”. If you want to try a power points modular system, this is a good one to go with. The problem is that this system doesn’t take game balance, IE the literal math upon which the entire game is built, into consideration. It throws balance and game economy out the window.

My recommendation to GM/DMs is to only allow this if you trust your players 100%. It is too easy to abuse, and I’ve had to learn over the course of three campaigns spread through five years that Spheres of Power/Might players will do everything they can to destroy the game balance and make the entire game about them and their single PC.

As for design, I can only give this system FOUR stars, because it just takes everything that the game was built upon and ignores it. I deducted another star because when I backed this on Kickstarter, it was sold as the ULTIMATE SPHERES OF POWER.

Ultimate is an adjective meaning “being or happening at the end of a process; final.”

This book is anything but the final collection and honestly, I felt betrayed by the creators. They continued to release supplements during the kickstarter that were not included and then continued to release supplements after the Kickstarter was concluded. I wanted to purchase the system in its final form, not the PENULTIMATE version. Be upfront with your customers next time.

In summation, an interesting system. Horrible for game balance. Too easy to abuse by power gaming players. Deceptive marketing from the designers.

Recommended to avoid at all costs, unless you want your game destroyed. Only let your friends that you absolutely trust play with it. Otherwise, avoid it.

An Endzeitgeist.com review

This massive, colossal doorstopper of a tome clocks in at 626 pages of content. No, I am not kidding. This review was moved up in my reviewing queue due to one of my readers actually sending me a print copy of the book with a request to review it.

Beyond the challenges 2020 held for all of us, this book proved to be a challenge to review in a couple of additional ways for me, ways which I simply had not anticipated. As a consequence, this review will be structurally a bit different from what I usually write.

First of all: What is this? It is important to note that Ultimate Spheres of Power is not (only) a compilation of the original book and supplemental material presented in the various expansion books (up to and including the Wraith, Fallen Fey sphere and Blood sphere are included); unlike many minimum effort compilation books, this tome actually did change some material and integrate feedback gathered during the original file’s circulation. It also does not include every bit of content from the expansion books for the spheres, which means it does not (completely) invalidate all those supplements—if you’re playing without that much regard to internal/external balancing anyways. If you do, then, and let me make that abundantly clear, then this book mops the floor with the previous incarnations of the books.

If you’re new to Spheres of Power, you can read reviews of the system and all books/pdfs compiled and refined in this book on my site. This book contains a ton of classes, spheres, feats, favored class options, items, incantations, etc.—this is one of the books with the highest rules-density I’ve ever covered.

Which brings me to the two ways one could look at this, and these require a brief look at the history of the system; please bear with me, this is going somewhere.

When Spheres of Power was originally released, it represented a widely-popular tome – and deservedly so. The Vancian spellcasting system with its spell-blocks is certainly charming and useful, but there always was a desire out there for casting to a) behave more in line with what we experience in books and the like, and b) spellcasting to behave in a way that is less overbearing. In short, Spheres of Power wanted to rebalance magic and make it feel more magical at the same time. The point-based spellcasting system made more sense to many people than the Vancian spellslots. And in the eyes of many, me included, it delivered on these promises. For the most part.

I’d be a hypocrite if I didn’t clearly state that, to me, these benefits outweighed some of the issues that even the original book had, for example how dippable it was, the lack of power-parity between the various spheres, and quite a few more. I should have been harder on the original book, but the freshness of its design, and its vast amount of options outweighed the rough patches for me. That, and I didn’t yet have the same amount of experience with the rather intricate system...and how it changed. Still, even back then, I should have been harsher on e.g. the Dark and Light spheres being somewhat limited when compared to, let’s say…Telekinesis, Conjuring or Creation. It’s not hard to see e.g. the Destruction sphere outperforming the Light sphere in damage; that was intentional. But the lack of parity also extends to utility, and some spheres that really needed an upgrade didn’t exactly get it. Compare e.g. Alteration and Weather, and you’ll notice that these are not equal in utility; perhaps more obvious would be the comparison of Divination vs. Fate.

That being said, the original Spheres of Power book had this very pronounced notion, this design goal, of allowing us to play mid-tier/low-fantasy, or choose those high-powered advanced options for high fantasy; this division was not consequently maintained throughout the run of all those expansion handbooks. Indeed, one of the issues that only slowly materialized in my tests, was that there was no real guiding oversight regarding the power-levels of the expansion handbooks; strong spheres became even stronger, while weaker spheres were upgraded to parity with the original spheres. This inconsistency in power-levels was rather insidious, in that it happened gradually. And it’s understandable: You design for one sphere, do cool stuff—it works, nice. But the line of where, if at all, to draw the high-fantasy/optional line became ever blurrier, and in later supplements, often primarily was employed solely for high-impact abilities with serious potential for incisions into planned narratives.

And frankly, in hindsight, I can say that I’ve failed as a reviewer for quite a few of these expansion books was seen within the context of this system; the perspective I assumed became too much inundated with mainstream PFRPG or higher power-level material that didn’t care about balancing as much (speaking of which: the Path of War content has btw. not been reproduced herein); I lost sight of the original promise of Spheres of Power, the original vision of a more even caster-martial approach, of optional, more powerful tricks that were clearly categorized. Throughout the series, it transformed to provide a power-level roughly on par with regular casters, in some cases exceeding them in numerical depth and action economy, if not in breadth.

This being said, the following points should be taken in the context of someone genuinely loving this massive doorstopper of a tome: These issues may or may not come up in your game, but since they apply globally, I considered them worth mentioning.

If you expected a return to this original promise of the Spheres of Power system, alongside a streamlining of the material released since, and the implementation of this material in a stringent regular play/advanced play-paradigm, then this book, in spite of its changes, will be a resounding disappointment for you. While Ultimate Spheres of Power does a lot right in these regards, it does not manage to reign in the power-increase due to synergies and the increase of options available, nor does it really establish a clearer baseline of power among spheres.

That being said, it should be emphasized that Ultimate Spheres of Power is a much smoother experience than using the original Spheres of Power alongside all of the expansion books; it is evident in quite a few cases that the system has indeed been playtested more thoroughly, not simply jammed together, with some of the more powerful options eliminated. The by now notorious incanter dip has been nerfed slightly, for example, though the paradigm of “giving up stuff later to gain power now” can, unfortunately, still be found. And you can still multiclass out of having to pay out.

So big suggested rule #1 for using this book: Limit multiclassing.

Big rule #2: I’d strongly suggest limiting, or at least very carefully vetting content from the Player Companion line by Paizo when using this book; the player’s companions, while often interesting, are also not balanced in a tight manner, and I found quite a few combos of the materials in this series and Ultimate Spheres of Power that allowed for really nasty tricks. This is not necessarily the fault of Ultimate Spheres of Power, but it’s something to bear in mind; the book hasn’t accounted for some of the more broken combos that can stem from interacting with these.

Another difference of Ultimate Spheres of Power in contrast to its predecessor would be partially due to its increased amount of material, and that would be action economy, and its system-inherent consistency: Quicken Spell in spheres costs a whopping 4 spell points; but casting is not either a standard or an immediate/swift action – it is much easier to gain casting for standard, move, swift, and free action going in spheres; there is a lot to optimize, and that is generally something I enjoy. However, I do believe that the system would benefit from global guidelines regarding spell point cost and casting action economy, because a decently-optimized caster does have a higher nova-capability than necessary, performing on par (or beyond) with save-or-sucks of Vancian casters. An easy way to mitigate that would have been an introducing of something like the martial focus employed in Spheres of Might – that way, combos would still be possible, but needed to be deliberate. As such, I do, particularly if a campaign’s supposed to reach the mid-to high-levels, recommend introducing such a mechanic…or at the very least, to impose a hard cap on benefits attainable via free actions.

In absence of these, let me propose big rule #3: Cap bonuses and debuffs at +/-5. It’s no surprise that PFRPG’s math becomes a bit wobbly at higher levels, but with Spheres of Power, some of these number-escalations can hurt a bit more; if you want to really make sure to maintain something akin to the series’ original promise, carefully vet all increases to caster level in particular, and cap those numbers.

The other, similarly subtle issue that can still be found herein, would be that the spheres are not consistent in how they value bonuses and bonus types; it is no secret that I am a bit of a stickler when it comes to those, and there are a few instances where the types don’t make sense regarding their value or type to me. It’s also worth noting that it’s pretty common to have buffs and debuffs scale up to +7/8 at higher levels, which is farther than most class options go; again, strongly suggest capping those.

That being said, these issues, while very much indisputable and present, are by NO MEANS dealbreakers.

Indeed, after going through this huge tome with a relatively fine-toothed comb, I can comfortably ascertain that the tome clearly works better than the collective of expansion books; and that is an achievement; indeed, I think the Drop Dead Studios crew must be lauded for it, lauded for the streamlining and improvements that went into this book. It should also be noted that the implementation of italics in this book is much smoother and more consistent than before.

Which brings me to the layout, which is more important for such massive tomes of content: On the plus-side, we have color-coded chapters, and one glyph for each sphere; if you flip through the massive spheres-chapter, you’ll have this glyph on the border of the page as well, allowing you to quickly skim through the physical book and find the proper sphere’s information – two thumbs up for that. It made navigating this huge tome much easier. That being said, I kinda wish the glyphs had also been used in the feat-chapter, which is GINORMOUS. We’re talking about slightly more than 50 pages of feats. Yes, that’s FIFTY, as in 5-0. Granted, this might be me having a visual mind, but I think it'd have been helpful to have each sphere-specific feat have the associated sphere-glyph, with dual-sphere feats having two glyphs. The feat-chapter also uses yellow as its header-color; granted, not the eye-hurting yellow of the original Illuminator’s Handbook, but it’s still yellow text on a background that’s not that much darker; having the letters sport a black outline would have significantly enhanced the readability of the chapter as far as I’m concerned.

On a rules side of things, the book has taken a more stringently-curated approach than the individual handbooks, with uses of e.g. Everybody Games’ excellent antagonize mechanics (which should have been core) and Spheres of Might, as well as psionics, taken into account, among other aspects.

…and honestly, without going into a level of detail that would render this review all but useless to most people, that’s as much as I can say about this.

Conclusion: Editing and formatting are good on a formal and rules-language level; while there are still aspects of the book where the rules can become problematic, I was pretty surprised by the degree of improvements that went into this book. Layout adheres to a functional 2-column standard with color highlights and artworks of various styles and aesthetic quality. As noted, I do think that information-design wise, the book does a couple of things right, but could have gone further. I still hate yellow as the feat chapter’s header text color; it doesn’t have enough contrast for my liking, but that’s an aesthetic nitpick. The PoD hardcover is a massive tome, dwarfing the Core Rulebook; it is glued, though, so if my other huge RPG-books are an indicator, it will suffer over the years. I can’t comment on the pdf-version, since I do not own it.

Adam Meyers, Darren Smith, Amber Underwood, Michael Uhland, Michael Sayre, Andrew Stoeckle, Andrew J. Gibson, Derfael Oliviera, John Little, Johannes Luber, Steven Loftus, Jeff Collins—that’s quite a bunch of designers, and considering that, it’s surprising to see how unified this book feels as a whole.

But is it good? This depends very much on what you wanted out of it. If you wanted a return to the vision of the original Spheres of Power and the power-levels it gunned for, then you’ll consider it OP. If you don’t care about balance, and just wanted a compilation of the handbooks, then the improvements made here in that regard might rub you the wrong way.

However, if you wanted an update of spheres of power and all of its content, with some of its rough edges sanded off, then this book does deliver EXACTLY what you wanted. If you’re looking for a system that plays more like magic from novels and movies, then spheres is a breath of fresh air.

Similarly, if your group enjoys optimization and combos, then Spheres of Power adds more strategy to the whole realm of magic than simply casting the best spell; in that way it’s a resounding success.

…but in those aspects, it’s also where one can genuinely criticize the book. I am inordinately fond of particularly the Blood and Time spheres, to call out two of my favorite parts of the book. Ultimate Spheres of Power is a gigantic toolbox of options that allow you to make magic more magical. When I love this book, I REALLY love it, and I adore the system.

…and yet, as much as I adore the way in which this rewards optimization, combos and the like, I can’t help but feel that I shouldn’t have had to spell out that bonuses should cap to not further exacerbate the issues of PFRPG’s math falling apart. Or that, if your group consists of hardcore powergamers (like mine), this wonderful magic system can make them tax the assumptions of PFRPG to the breaking point; the latter is not as big of an issue if everyone’s on board, but in mixed groups, with some less crunch-savvy players, the differences in power-levels can be rather significant; more so than in many comparable contexts.

I would love to unanimously recommend this book and its inspired, awesome concepts and ideas, slap 5 stars + seal on it and smile from ear to ear, but I ultimately can’t do that. If you and your group can reach an agreement to not push the system to its breaking points, then it will provide literally years of fun for you; courtesy of the new system, the entirety of PFRPG’s first edition can feel radically different, fresh, exciting. For you, this book may well be one of the most important in your entire library.

I love a lot in this book. Heck, I loved a ton of the individual spheres-handbooks. But, in many ways, this book to me represents the end of a honeymooning phase, the point where the system should ideally have no aspects that creak anymore.

The best way to think about this, would be to think about it as an alternate caster-system that results in more focused, themed, casters reminiscent of those we know from fiction; who can theoretically perform in a devastating manner on par with Vancian casters; depending on player-expertise, beyond them in their focused areas of expertise.

It's also a book that lets you drastically change how PFRPG feels, with incantation engine and items etc. allowing you to make use of pretty much the majority of the entire PFRPG array of options.

Damn, how should I rate this? I am genuinely torn on this one, as I adore how it operates, but am somewhat disappointed by how easily the system can still be strained, and in spite of the name, I don’t think it makes for the best version of the content it could have been. I am, somewhat, in the camp of the people who wanted a realization of the original vision behind Spheres of Power; I wanted something more akin to a second edition, and I can understand anyone who’d consider this a 3-star tome.

But then again, I pride myself on reviewing books for what they are, and not for what I’d want them to be. Granted, this approach made me fall prey to the whole power-level escalation in the individual handbooks, as there was no clear power-level as a baseline for the entire series. Handbook A pushes envelope; handbook B doesn’t; C pushes further – you get the idea; when the individual frame of reference is the sphere in question in combination with an as-of-yet unfinished entire series as baseline, it’s hard to judge anything but the context of the sphere and a potential overall power-level guesstimate.

And there’s the factor that this book was billed as a compilation, with some improvements to (content) editing – and it delivers in that regard.

In fact, it delivers more than I thought it would, but less than I hoped for.

The key to rating this in a fair manner I can live with turned out to be a weird one: Eliminate the “Spheres of Power” from the title; try to block out what came before; try to block out the original, the handbooks. Assume a position of a person who doesn’t have very specific expectations of what the book should be but retain my hard-won knowledge of how its intricate and rather complex systems can be manipulated, tweaked and pushed.

If this were a new book of its own, what would my response be? I’d celebrate this book for all of its genuinely amazing components, and for the streamlining and rules-changes that it DOES implement. But I’d also caution against its not-as-streamlined components, and I stand by the big rules suggestions above; implementing them will make the system operate in a much smoother manner.

I thought long and hard about the verdict, and ultimately, I’ll settle on a verdict that will probably annoy everyone, but which I consider to be fair: In the end, I think this is a 4.5 stars book, rounded down.

If you are new to spheres of power and have no experience with the system, consider my verdict for the original book to still be valid: For you, this very much will a radical and awesome paradigm chances that breathes life into an old system , and may be worth 5 stars + seal based on that alone.. Just, if you do, consider implementing the limits I outlined above; you’ll thank me at the very latest when your characters reach 10th level. Unless, of course, that’s what you and yours enjoy! There is no wrong way to game, after all!

Endzeitgeist out.

Ultimate Spheres of Power is a massive book with more than 600 pages that updates to the alternate magic system presented in Spheres of Power as well as the handbook project that expanded all 20 spheres. The book also includes materials from Spheres Apocrypha and other Spheres supplements that were published before its kickstarter. I have backed the handbook project for spheres on patreon as well as this book on kickstarter. I also participated in the feedback and discussions during the playtest of Ultimate Spheres of Power and its updated rules.

First off, when I picked up the original Spheres of Power back in 2015 I instantly fell in love with it and I now find little interest in playing pathfinder without it. The system could be used both together with or instead of normal vancian casting, and excelled at producing spellcasters based around a theme. With Ultimate Spheres of Power, this still holds true.

The idea is that you choose a couple of spheres which grant at will abilities you can augment by spending spell points. And then learn talents that expand those spheres, either by granting new abilities or granting effects that modify existing abilities like increased range or the ability to target an area. Abilities that significantly power up an ability such as [mass] talents that change a power from single target to multitarget or improve action economy with a single ability typically come with a spell point cost in addition to the cost of spending one of your limited talent choices.

The book is so massive that I won't be able to go in depth on all the options, but I will try to give some highlights of the options presented.

The Good Casting Traditions: Instead of the arcane/divine/psychic divide of the base pathfinder, each spellcaster requires a casting tradition which specifies details about how their magic works. This includes choosing a casting ability modifier (usually Int, Wis, or Cha), general drawbacks (does your magic require Somatic and Verbal components? Does it require a focus like a holy symbol, ring, wand, or metal weapon? Does your magic cause a horrible addiction, drain your life energy, cause pain, require you to play music, or drain energy from the land around you? And many more options), and boons (such as having an easier time maintaining spells with concentration, ability to overchannel to temporarily increase your power, or getting more spell points to fuel your magic). Casting Traditions should ideally be determined in a cooperation between the GM and the Player, but also serves as a tool for the GM to customize his world. Casting Traditions can also be assigned as arcane/divine/psychic or something else entirely if desired to increase the transparency with vancian casting.

The Spheres: The 22 spheres Alteration, Blood, Conjuration, Creation, Dark, Death, Destruction, Divination, Enhancement, Fallen Fey, Fate, Illusion, Life, Light, Mind, Nature, Protection, Telekinesis, Time, War, Warp, Weather, are all distinct and flavourful with mechanics that support the theme and allow for both specialization and diversity. The chapter with all the spheres and their basic talents is around 160 pages giving lots of options.

Advanced Talents: Magic abilities with significant impact on the setting are presented in a separate list of advanced talents. This is where you can find long range teleportation, scrying, creating 2 mile radius darkness, creating instantaneous and permanent effects, and so on. Depending on the style of game, a GM can choose to allow or ban advanced talents. Even if they are allowed, a player should still inform the GM of any advanced talent they take as even in high magic settings where most options would be fine, some can still have major unwanted impact and with well over 30 pages of advanced talents they might not be familiar with all of them.

The Somewhat More Neutral Sphere-Specific Drawbacks: Whenever a character gains a new sphere, they may choose one or more sphere-specific drawbacks for that sphere. In Ultimate Spheres of Power spheres gained through temporary talents cannot benefit from sphere-specific drawbacks and temporary talents cannot be used to buy off a sphere-specific drawback. The way these drawbacks work you lose access to an ability in the base sphere or limit that ability in some way in order to get a bonus talent in that sphere. This is a central and important mechanic when it comes to getting your concept to line up with your mechanics, but also a somewhat fiddly mechanic that can yield a lot of extra versatility if optimized.

Classes: While the classes are generally good, I find that most are either a bit bland or a build your own class type of class. The Incanter is perhaps my favorite class, but it is essentially a generic sphere caster who is specialized in having many magic talents. They did mostly fix the issue of dipping into the Incanter as they can no longer gain all their specialization options at 1st level, and the sphere specialization options now mirror the Conscript from Spheres of Might granting a special ability at 3rd level, 8th level, and 20th level making the option feel more unique compared to the original version. Similarly the Hedgewitch is a generic mid-caster and the Mageknight is a generic low-casting gish, but they are well made and interesting. The Elementalist stands out as everything Paizo's Kineticist wishes it could be, namely an easy to use blaster with mechanics that are easy to grasp and ability to pick up some thematic utility options. Correct application of the Casting Tradition and use of the Nature Sphere and you will have a great elemental bender.

Archetypes: With about 120 pages of archetypes, there is a lot to choose from and the quality will vary. A few archetypes such as the dual-blooded sorcerer were removed in Ultimate Spheres of Power as they essentially traded out nothing for a lot of power, while many of the generic sphere-archetypes for pathfinder classes remain pretty bland. There are however also a lot of inspired archetypes that change up classes in fun and interesting ways.

Transparency: Ultimate Spheres uses something they call magic skill bonus and magic skill defense in place of caster level checks in base Pathfinder. While caster level determines the scaling of abilities and DCs of sphere abilities. This can get a little confusing for players who are used to Pathfinder and d&d. For the most part the systems interact with each other in the way you would expect, and basic rules are specified in chapter 1 while specific instances of how the sphere talents interact with Paizo spells are called out in the talents where it is relevant. It still happens that you run into unclear interactions.

Balance Considerations While the original Spheres of Power was clearly a downgrade in power compared to vancian casting, especially at higher levels. This was mostly due to the loss in versatility. Even in the original, a sphere caster could pull off abilities that a vancian caster would need to wait until a higher level for (such as short range teleportation, or a mass charm monster) due to the nature of specializing in a single trick by investing all your talents into that trick. The possibility of creating this type of one-trick pony who has one trick that wins any encounter where it applies but is useless if it doesn't apply still exists in Ultimate Spheres of Power.

Ultimate Spheres of Power also comes with a massive increase in options, which has led to more powerful options. By dipping around, it is possible to gain a multitude of unusual bonus types that in some cases still scale faster than they should as well as unanticipated synergies. One example would be using the Community-Minded trait from Paizo with the War Sphere using the sphere-specific Battle Manipulation and Alternate Rally (for Empower). This allows the sphere caster for 1 talent and a trait at 1st level to as an immediate action spend a spell point to grant themself (as you are your own ally in pathfinder) or an ally within 30 feet of you a +4 morale bonus to either attack rolls and cmb, ac and cmd, saving throws, or concentration checks and checks against spell resistance for 3 rounds. While morale bonus is one of the common bonus types that matter, this together with other dedicated dips for either action efficient or long term buffs of different types can shake up math to the point where a buffed character makes the d20 rng irrelevant.

The increase in options has also led to an increase of save or lose abilities in Ultimate Spheres. While these have existed in base pathfinder and in the original Spheres of Power as well, they are much easier to get or stumble into in Ultimate Spheres. Due to how implements (magic items that increase your caster level and thus also save DC) work as well as how sphere casters can usually always operates at or near full power for as long as they have spell points, combined with the ease of making the save or lose ability multitarget, means spheres casters can shut down combat encounters just as hard as a vancian caster using their best spells.

In the end, my opinion is that while a caster using Ultimate Spheres is less versatile than a vancian caster, a vanilla paizo caster will usually find that they have less raw power compared to a sphere caster's best tricks. This becomes even more noticeable with unlimited access to advanced talents (which I would not recommend), as you have easy demon summoning in Conjuration that can match planar binding, the ability to retrain your whole character using Complete Reversion from the Time sphere, or creating a 2-mile radius area of death using Dark, Light, or Weather spheres. Access to advanced talents with GM approval is still needed if you want staple abilities like long range teleportation, or the ability to raise dead.

Conclusion While the balance of Ultimate Spheres requires more GM oversight than the base Spheres of Power, I find that the rules updates and additional content is an improvement of an already amazing system. I personally will not GM Pathfinder without allowing spheres, though depending upon the style of game I might insist upon only using casting traditions with significant drawbacks and disallowing advanced talents. As a player, unless my concept is specifically based on a d&d or pathfinder style character I find it much easier to realize it using spheres and to adjust the character to be more in line with the rest of the party and setting.

As such I will give Ultimate Spheres five stars and a strong recommendation to anyone who plays pathfinder, and especially anyone who is tired of vancian casting and would like to try out some new options.

TL;DR - Ultimate Spheres of Power is a great system with many strengths. However, this compilation, and the handbook supplements it is derived from, suffer from lower editorial quality and attention to detail than the original Spheres of Power book. People who are familiar with the original should be aware that they may have a different experience with this product; I am not comfortable letting my players have free reign with options from this book like I was the original.

The original Spheres of Power book is my favorite Pathfinder product, not just 3rd party supplement. I like the Spheres magic system better than the Vancian magic system in Pathfinder, and think using Spheres improves both the mechanical and thematic enjoyment of magic. The system simultaneously delivers greatly increased flavor and freedom and generally more powerful magical effects while also removing many of the classic sore points with traditional D&D spells and actually improving game balance and ease of play. I would not GM a Pathfinder campaign without it, and I have players who wouldn't play without it.

All that said, the editorial quality of Spheres content decreased significantly after the core Spheres of Power book, and this compilation includes the potentially problematic content from the later expansions. Some were fixed during the playtest for this book, but after following the playtest and revisions closely, it's my opinion that the majority of the problems remain. Below are some of the recurring kinds of issues I encountered. These may not be a problem for every group, but buyers should be aware of these potential issues.

• Overly efficient action economy - There are many, many new talents in USOP that allows casting effects as a move, swift, free, or immediate action, including an entire sphere of free-action buffs. This is not relegated to support and defensive magic; there are many offensive effects that work the same way. There are also several spheres that allow applying two different effects, with separate saving throws, to the same area in a single cast. Very many of these are also cheap, often costing 1 extra spell point, rather than the 4 spell points Quicken Spell usually costs in Spheres.
• Overly large numerical bonuses and misuse of bonus types - There are multiple examples of this, but I'll just explain one particular example. The Devil, a motif talent from the Fate sphere, gives a +2 insight bonus to attack rolls and AC, that increases by 1 for every four caster levels, against enemies that have been previously studied as a free action. At low caster levels, only one target can be studied per round, but for every 5 caster levels, another enemy can be studied in a given round. This studying effect lasts for hours per caster level, so studying can occur before combat begins if possible, and there is no limit to how many enemies can be studied. (This duration also means that this buff can actually be cast long before combat and activated as a free action followed by an immediate action, making the motif talents one of the previously mentioned action economy issues.) From 5th level on, if the caster waits only a single round before activating the buff, four creatures can be studied, making this buff usually effective against most enemies in most combats. In Spheres of Power, caster level can grow to 25 easily (including a +5 bonus from a magic item that is the equivalent of a +5 weapon for a caster), meaning this talent provides up to a +8 insight bonus to both attack rolls and AC against most enemies you'll encounter. That is already a larger buff numerically than exists previously in Spheres or base Pathfinder. It is also an insight bonus, which are doled out very carefully in official Pathfinder material. There are no large situation-independent insight buffs given by any of the thousands of Vancian spells, which is not an accident. Major spell bonuses are given in the form of enhancement, size, and morale bonuses to limit how much stacking can occur. The Spheres system already has buffs of these kinds, and then added effects like this that stacks with it. This can extremely imbalance the system's mathematical expections and result in a poor play experience, and I highly recommend you do not use talents that fit this category at high levels.
• Potentially inappropriate narrative effects - Spheres had the very useful innovation of Advanced Talents, talents that fundamentally changed how the game was played and might not be appropriate for some campaigns or groups, such as long-distance teleportation, resurrection magic, scrying and other very powerful divinations, etc. They are explicitly opt-in and not assumed to available to players unless the GM makes clear otherwise. This book has a few effects that I strongly feel belong in the category, but aren't put there and therefore may take groups by surprise in unfortunate ways during play. A good example is The Devil motif, whose studying effect reveals a fairly accurate range for a creature's CR, which may be a really interesting effect in some games, but a complete plot-ruiner in others. Another reveals a person's caster level and remaining spell points. A clever GM or one willing to bend the rules can of course work around such an issue, but such effects really should be called out ahead of time, and the core book was far better about doing so than the expansion material.

An excellent collection of rules from a large number of handbooks, appropriately rebalanced.

Definitely worth a purchase for someone new to the system, and I felt it was worth it for me for the rebalances and ease of having all of the rules in one place.

Thanks for all the hard work!

Ultimate Spheres of Power is the compilation volume for the Spheres of Power ruleset for Pathfinder 1E. This product introduces a modified form of spellcasting where different powers are separated into categories known as spheres that players can pick and choose from in order to create a more unique, thematic character. Additional systems like casting traditions allow for further uniqueness, all wrapped in an easy-to-learn packaging that's friendly even for newcomers.

The original Spheres of Power was a fairly large book in its own right, but this compilation volume that includes material from numerous handbooks and other releases clocks in at over 600 pages of content and represents the definitive edition of the core Spheres of Power rules.

I received this product through DriveThruRPG after backing the Kickstarter campaign that created it, and I have no regrets about helping fund it. Put simply, these rules offer a level of depth and creativity for characters (without making it too complicated to learn!) that other rulesets for Pathfinder 1E simply can't match. If you're looking for something new to refresh your Pathfinder 1E games, or you're thinking about getting into it for the first time but want to create a concept that doesn't quite fit in the core rules, check out this product. There's a reason Spheres is one of the most beloved third-party rulesets for Pathfinder 1E, and this book is more than worth the price. It's not merely a 5/5, it's one of my top recommendations period.