Uh, that’s not it at all. As someone pointed out above, the mob is a detour that offers you the opportunity to earn another anima power by passing the mob’s skill check. If you fail (the debuff stacks depending on how many times you eat the special attack), you can either take your lumps and get the new power, or wipe the debuff out and resolve to do better next time you come through. This isn’t trolling, its a personal challenge that people like OP seem to be failing at (i.e. “Don’t stand in the angry patch of dark badness slowly building up under your feet as the 3-second cast completes”).