in case anyone's wondering on the sort of creature my sona is within my setting - they're called Spell Devourers and I am actually working on making two stat blocks for them: one that's for my own in-house tabletop system i've been building, and one that'll be for pathfinder 3.5e :)
as for in-setting stuff, spell devourers are pretty rare, almost exclusively the product of magical experiments gone awry (usually ones that are attempting to create artificial life). naturally formed spell devourers are even rarer and tend to not be very intelligent, about on the level of like. a small prey animal. but ones from magical experiments tend towards around the same average intelligence level as other sentient species