OK, try vanqing or doing HM dungeons with [whirlwind attack] and fail when enemy casters fry you. Then try it with [pain inverter] and win when they fry themselves instead.
You're talking to a Legendary Vanquisher, newbie.
I'd rather have FGJ! on my bar than see Morgahn spread love tbh... >.>
OK, try vanqing or doing HM dungeons with [whirlwind attack] and fail when enemy casters fry you. Then try it with [pain inverter] and win when they fry themselves instead.
If you are incapable of surviving a nuke, Pain Inverter won't help that.