Maladrax, the Eruption

Flying
Whenever Maladrax deals combat damage to a
player, you may discard your hand. If you do,
draw cards equal to your devotion to red, then sacrifice Maladrax. (Each {r} in the mana costs of permanents you control adds to your devotion to red.)
You may cast Maladrax from your graveyard if
your devotion to red is seven or more.