Kalonian Hydra [The List] Mercadia Whenever Stuffy Doll is dealt

Whenever Stuffy Doll is dealt damage

Set: Ice Age Type: Sorcery Rarity: Rare Cost: {G}{W} As an additional cost to cast this spell

−9: You get an emblem with "Whenever you cast a spell

Set: Modern Horizons Type: Instant Rarity: Rare Cost: {U} Counter target instant or sorcery spell unless its controller pays {1}

And at his passing

Kalonian Hydra [The List] Mercadia Whenever Stuffy Doll is dealtSet: The List Type: Creature Hydra Rarity: Mythic Cost: {3}{G}{G} Trample Kalonian Hydra enters the battlefield with four +1 +1 counters on it. Whenever Kalonian Hydra attacks, double the number of +1 +1 counters on each creature you control. Even baloths fear its feeding time.