Karn, Legacy Reforged (Extended Art) [March of the Machine: The Aftermath] Arms Set: Scarlet & Violet: Surging

Set: Scarlet & Violet: Surging Sparks Type: Fighting Rarity: Illustration Rare Retreat cost: Colorless

Set: Sword & Shield: Astral Radiance Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

When Dragonlord Atarka enters

Set: Diamond & Pearl: Black Star Promos Type: Grass Rarity: Black Star Promo

Set: Modern Horizons 3 Prerelease Promos Type: Instant Rarity: Rare Cost: {1}{U}{U} You may sacrifice a nontoken blue creature rather than pay this spell's mana cost

Karn, Legacy Reforged (Extended Art) [March of the Machine: The Aftermath] Arms Set: Scarlet & Violet: SurgingSet: March of the Machine: The Aftermath Type: Legendary Artifact Creature Golem Rarity: Mythic Cost: {5} Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add C for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.