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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
Other cards from Mystery Booster 2
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Karn, Legacy Reforged (MB2-255 — Foil) is a legendary artifact creature Golem from the Mystery Booster 2 set. Its power and toughness are each equal to the greatest mana value among artifacts you control, and at the beginning of your upkeep it generates colorless mana equal to your number of artifacts that can only be used for artifact spells or abilities. The card commonly serves as a ramp and payoff piece in artifact-focused decks by converting board presence into large creature stats and usable artifact mana.
Catalog pricing data as of 19 Apr 2026, 22:01
