Ragnaxxa catches on to the tactic of kill the healer.
There were limits on how often Ryybyn could die for someone else. I also think it must have only affected Ryybyn’s max HP because I distinctly remember running around with 1HP the whole damn fight. Oh, and if Ryybyn dropped to 0 they lost even more HP off their max, and there would be no coming back if their max dropped to 0. Ryybyn was one strike away from unrevivable death.