wizard is more fun than DH, that's for sure.
step 1: put on some speed boots
step 2: activate Diamond skin
step 3: run around in circles until you have big old mob clustered together ... absorb ... absorb ... absorb
step 4: run into the middle of mob and hit frost nova
step 5: double tap meteor
step 6: drop arcane hydra
step 7: watch everything die