After giving it one last looking over, the only other problem I see with it is that spellcasters and rogues get to add their primary stats to devouring, where it used to take special feats. Mages already have the vorish spells they can call upon, pretty much giving them free 'super nom' ability on top of those spells seems a little over the top to me. I honestly didn't know too much about the magic system, but it was explained to me that this is the level where spells start getting silly anyway. The equalizer seemed to be that, without the use of spells, spellcasters had less chance of just outright overpowering and nomming someone. Now, that weakness is taken away, making things like clerics and stuff 'the way to go' as far as characters go. "Oh, I can nom people as good as the fighter and I'm weak as a twig, AND heal myself, AND blast everything around me with magic, AND buff myself...hah, poor fighter." Sort of thing. x3 This is just my perception on it, perhaps I'm wrong?<br/><br/>Tailmaw also seems a bit silly. Getting a free attack when someone would attack you, and getting it every 2-6 rounds? Even with the penalty, the improved versions of the feats make it silly-level of overdone. I don't know of too many other feats in the entire pathfinder library that give you a free attack every few rounds just cause someone else attacked you.<br/><br/>Other than that, the rules look pretty decent.