Things that need changing/fixing:
Which stat is Nature based on?
Does the thri-kreen have too many attacks or powers? It was actually supposed to have a gythka (melee weapon) attack, but I figure it could be split between a melee and ranged thri-kreen at some point. This will be a serious problem when writing up kreen psychics, shamans, etc as they effectively have all these abilities before adding the psychic and magic abilities.