User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: SECOND MATCH!/@comment-7418318-20130723075823

Tough one, since we know barely anything about Mavis power and the only spell we saw her cast was fueled by the magic power and feelings of the tenrou team.

Can she even use magic in that form she's in now? Since he can't see her, can Zeref feel her position accurately enough to attack her? Can his magic, that seems to suck out or destroy the life of the target even affect someone who's alerady dead?