Incredibly useful for anyone working on their own house rules and homebrew. Why isn't this in the DMG? It should be.

This is an excellent resource for anybody interested in building or modifying monsters for their own purposes. I am interested in building a "mutant" or "beastman" mechanic (as so prevalent in Warhammer Fantasy), so this is exactly what I was looking for, and I am hopeful that the author would be willing to include additional official books in the document.

Very Very usefull for NPC creation and Monster Upgrades. Making monsters and NPC is the bread and butter of a DM and this really really improoves on the whole process.

An excellent resource for creating new monsters or npcs for the players to face or just increasing the challenge of an encounter by adding some twists to your players opponents. Plus saves wear and tear on your books from having to look this stuff up. Thanks!!