March of the Machine: The Aftermath · #49
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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.
Abilities, attacks, weakness & resistance
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Karn, Legacy Reforged (MAT-49) is a legendary artifact creature Golem from the March of the Machine: The Aftermath set. Its power and toughness are each equal to the greatest mana value among artifacts you control, making it scale with your artifact board. At the beginning of your upkeep it adds colorless mana for each artifact you control that can only be spent on artifact spells or abilities and persists until end of turn.
Catalog pricing data as of 21 Apr 2026, 12:51
