Karn, Legacy Reforged (Foil Etched) [March of the Machine: The Aftermath] Human Shaman III — Put all creature

III — Put all creature cards from all graveyards onto the battlefield under your control

or enchantments

Each player who doesn't win the subgame loses half their life

Draw cards equal to the greatest toughness among creatures you control

Then if this is the second time this ability has resolved this turn

Karn, Legacy Reforged (Foil Etched) [March of the Machine: The Aftermath] Human Shaman III — Put all creatureSet: 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.