March of the Machine: The Aftermath · #149
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Karn'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.
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Karn, Legacy Reforged (MAT 149, Etched Foil) is a legendary artifact creature Golem from March of the Machine: The Aftermath. Its power and toughness are each equal to the greatest mana value among artifacts you control, and at the beginning of your upkeep it adds colorless mana equal to the number of artifacts you control that can only be spent on artifact-related uses or any other uses except nonartifact spells. This card commonly functions as a ramp and payoff piece in artifact-focused decks, scaling with the size and values of your artifact board.
Catalog pricing data as of 21 Apr 2026, 06:42
