Gruul Keyrune | Magic: The Gathering
Formats Gruul Keyrune is Legal in
Official Oracle Text for Gruul Keyrune
: Gruul Keyrune becomes a 3/2 red and green Beast artifact creature with trample until end of turn.
Official Rulings for Gruul Keyrune
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.