Talk:Ascended/Darkin/@comment-3186065-20170710141440/@comment-3974211-20170805155844

From Kayn's lore, it's shown that Rhaast can refuse to enter the symbiotic relationship with those who hold him - refusing to share his power, or outright consuming them on-touch. It's apparent that he is sustained or empowered by lifeforce, which is evident even in-game, but it's unclear why--if he feels imprisoned--that he would choose to kill his holder rather than free himself. Waiting for a "strong body" is a rather large gamble, since he could be imprisoned forever - and he seems more desperate than that.

It's possible that Rhaast is only vulnerable to dying once he enters a symbiotic relationship with his host, and so he has to wait for a host whom he believes won't "let go" of him. Until he found a host who wanted his power, he just contented himself to draining people.