Another quality release:

• Lots of customizability, both of mechanics and of flavor.
• Balance is given a lot of thought. Possible interactions with other mechanics are explicitly considered.
• Breath weapons (just to name one) that actually scale properly with level.

Class philosophy reminds me of a combination between Sorcerer and Warlock, but with completely different flavor and better balance.

It's low-magic in the sense of no spellcasting, but not quite in the same sense as the author's major work Masters of the Mundane. I'd consider mutations to be a different kind of magic system, one that allows at least some amount of control. If anyone else has played Caves of Qud (retro-style pixel-art roguelike in a post-apocalyptic world full of mutants), this would probably be a great way to play as mutants in a tabletop version of Qud.

An ambitious work that combines carefully thought-out mechanics with a unique, unifying flavor. The author seems dedicated to adding new content too. A real labor of love.