Rith, Liberated Primeval [Dominaria United]

Set: Dominaria United Type: Legendary Creature — Dragon Rarity: Mythic Cost: {2}{R}{G}{W} Flying, ward {2}Other Dragons you control have ward {2}.At the beginning of your end step, if a creature or planeswalker an opponent controlled was dealt excess damage this turn, create a 4/4 red Dragon creature token with flying.