Originally Posted by
Dire_Flumph
The DO cleric would be the first time the Snarl encountered a quiddity other than its own. That might have given it pause and spared him and explain why he'd be around.
Edit: Sorry, realized I didn't really answer your question. I know the fates of Kraagor and Serini are up in the air, I'm not 100% sure they are alive and even if they are, I'm not sure they'll be used as a "major ally" other than some exposition. Seems too pat, but that's just my opinion. But the way I see things possibly shaking out is:
1. DO cleric falls into the rift way back when. It has the purple quiddity as a result of being a DO cleric. Snarl spares him (curiosity possibly or something else)