Best to have a Life Steal Weapon.

Gale force
Calamity
Diamon Shards
Obliterate
Arcane Hydra
Scramble
Evocation
Power Hungry
Critical Mass

http://www.youtube.com/watch?v=kfdmySomYXc&list=PLEpvECUUdq0998Kg_CaE7nt4X5jIAlvha&feature=plpp_play_all