Karn, Legacy Reforged (Retro) [March of the Machine: The Aftermath] Elemental if each player has an

if each player has an empty library

each creature that player controls attacks if able

then put two cards from your hand on top of your library in any order

Set: Black & White: Plasma Storm Type: Item Rarity: Secret Rare

Karn, Legacy Reforged (Retro) [March of the Machine: The Aftermath] Elemental if each player has anSet: 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.