Shuul, False Champion

Hellbent - Shuul, False Champion has haste and +3/+3 as long as you have no cards in hand.
At the beginning of your upkeep, discard a card. Otherwise, Shuul deals 5 damage to its controller.
Whenever Shuul deals combat damage to a player, it deals damage equal to its power to each of that player's creatures.