Kukazu, Tortured Soul

Trample, indestructible, rampage 3, riot,
protection from Humans
At the beginning of each combat step, untap
Kukazu. You may have Kukazu attack an
opponent that's not attacking during that combat.
If Kukazu would ever leave the battlefield, return
him to the battlefield under your control.
"My, my . . . Moonstar . . ."