Ascian possession is such an oddly vague thing. I still don't know if the person being possessed is aware or conscious at the time.

Still doesn't really explain how Lahabrea popped all those people out of the Lifestream, at the exact spot they needed to be, when said spot had no aetherial beacon even in the vicinity. I mean, you could just handwave it by saying "He's an all-powerful Ascian", but what he did goes against the basic facts of how teleportation works in this world.

(Super off-topic, but I find it funny how you refer to Thancred with the past tense, as if he's already dead... because he might as well be, with how stunningly relevant he's been in the story since 4.0.)