Koma, Cosmos Serpent [Kaldheim] SM204 if your opponent adds a

if your opponent adds a card(s) from their Deck to their hand (except during the Draw Phase): You can send this card from your hand to the Graveyard

Set: World Superstars Card type: Effect Monster Rarity: Super Rare Attack: 1700 Defense: 1100 You can discard 1 other "Heraldic Beast" monster

Set: Time Spiral Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Buyback—Discard two cards

Set: Ghosts from the Past Card type: Effect Monster Rarity: Ultra Rare Attack: 1000 Defense: 2000 (Quick Effect): You can Tribute this card

during your opponent's turn: You can send 1 "Hieratic" monster from your Deck to your Graveyard

Koma, Cosmos Serpent [Kaldheim] SM204 if your opponent adds aSet: Kaldheim Type: Legendary Creature Serpent Rarity: Mythic Cost: {3}{G}{G}{U}{U} This spell can't be countered. At the beginning of each upkeep, create a 3 3 blue Serpent creature token named Koma's Coil. Sacrifice another Serpent: Choose one Tap target permanent. Its activated abilities can't be activated this turn. Koma, Cosmos Serpent gains indestructible until end of turn.