As much as the killing off then back to 100% health does my nut in, if you can find a time he's at 90-100% health: PoM Ed with as high HP as possible. S. Banshee W/ Impulse, Necropolis W/ Ragnarok/Echo Cosmic and S. Onyx Son W/ Alchemy absolutely annihilates him in one run. Simple fact is save those till endgame and your clan will climb way up there in the ranked rewards