Simic Keyrune

three generic mana Artifact

tap this permanent : Add one green mana or one blue mana .

one green mana one blue mana : 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.)

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Showing Gatecrash#237

Price

0.25 $

Foil 0.39 $

18 printings

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Simic Keyrune rulings

2013-04-15
Until the ability that turns the Keyrune into a creature resolves, the Keyrune is colorless.
2013-04-15
Activating the ability that turns the Keyrune into a creature while it's already a creature will override any effects that set its power and/or toughness to another number, but effects that modify power and/or toughness without directly setting them will still apply.