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{T}: Add {G} or {U}. {G}{U}: This artifact becomes a 2/3 green and blue Crab artifact creature with hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
Abilities, attacks, weakness & resistance
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Simic Keyrune (GTC 237, foil) is an uncommon artifact from the Gatecrash expansion. It can tap for green or blue mana and for GU it becomes a 2/3 green and blue Crab artifact creature with hexproof until end of turn. The creature conversion interacts with effects that set or modify power and toughness and is colorless until that ability resolves.
Catalog pricing data as of 4 May 2026, 21:23