Simic Keyrune

Text:

: Add or .
: Simic Keyrune 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.)

Rulings:

• 4/15/2013 Until the ability that turns the Keyrune into a creature resolves, the Keyrune is colorless.
• 4/15/2013 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.