Bulwark 
Enchantment
At the beginning of your upkeep, this enchantment deals X damage to target opponent, where X is the number of cards in your hand minus the number of cards in that player's hand.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL