[Jack Simth]

Possessed Hawk, usually; and Familiars are intelligent anyway; as a Sorceror 10, Jason's familiar would have an Int score of 10; one for Kaylin would have an Int of 13. Mostly, though, the idea is to have a reliable ride and target for such things as Wind Walk, that's not stepping on anyone's toes.

Well, Polymorph is only good for about 15 minutes or so; basically a single combat, perhaps two if they are really close together; Silent and Still overcome the little issue of a lack of fine manipulators (Still) and the ability to speak (Silent) (Jason already has both feats) so that he can place, say, a Magic Circle Against Evil (+2 Deflection vs. attacks from evil creatures, +2 to saves from effects from evil creatures, counters mind control ... which would supress Jason's control over his familiar.....) on his first action in combat. Alternately, he's a non-target while Telekenetically throwing things around, or casting a nifty Invisibility Spehere that then covers the party... which he can drop on the Rogue without using an extra spell slot and round.

Of course, it's a higher level spell slot... hmm... probably better, under most circumstances, to simply stay manifested and cast normally; that same Invisibility Sphere or Magic Circle Against Evil could be cast on Jason by Jason, giving most of the same benefits, and using a lower level spell slot ... which would then leave Jason free to use Shadow Conjouration (silent) with any noncombatants to drop creatures every here and there to give Kibin flanking for sneak attacks....

Kaylin could also get a familiar; a more powerful one, for that matter, with the five level difference.