[FaeLenx]

The worn out status also ticks away after your turn, though. So you'd only really have 2 turns of being worn out. But two hundred extra FP might be a lot.

The real thing to consider is the value of unresistable damage and how often you'd want/need to use this skill to begin with. Against certain enemies or people changing their equipment to hard counter you, this skill could be what it would take to chunk them for half their HP that you'd otherwise need to spend twice as many turns grinding through.