I just wanted to take a moment to praise the artwork - the PDF is a short 7 pages, but the covor image is evocative (pun definitely intended) and caught my eye while browsing. Props to Chan Yue Rong - your art rules!
There are 7 spells and 1 cantrip contained in this book, and there's a good mix of damage types and effects here, from single-target control to area-of-effect damage and even a few utility spells for good measure. There is very little overlap in these pages with the existing spells in the CRB, so don't worry about not getting your money's worth - for less than the cost of lunch this dishes out some very entertaining options. There's even a Background for those aspiring evocation experts in here!
Most of the spells within are relatively balanced compared to the spells in the CRB, with one or two standouts that made me look through the Archives for similar spells to compare them to. None of the spells are strong enough to derail a campaign, by any means, but I definitely did a double-take and asked "Is that real?" to my empty room a couple times. Of course, every spell in this issue has the Uncommon rarity, so anything you (or your GM) finds to be too strong can simply be restricted.
I didn't notice until I started writing this review, but none of the first three spells have an Elemental or Energy Trait listed, even though they seem like they should have one.
Unfortunately this site doesn't have a 10-point scale, or else I'd give this one a 9/10. The artwork, variety, flavor, and usability of all of the spells given easily outweighs any issues I have with balance concerns or missing traits. That said, I would rather round up to a 5/5, given the quality on display here. Thanks for your contributions to my home campaigns (and, unfortunately for my players, to my villains)!
[5 of 5 Stars!]