War

Indestructible, Trample, Haste
Whenever War deals combat damage to a player, choose a creature that player controls to fight War
At the beginning of each players upkeep, that player chooses a creature they control to fight target creature they don't control. One additional creature must be chosen like this for each subsequent upkeep for as long as War remains on the battlefield. If a player has no creatures to be chosen like this, that player takes 7 damage