Izzet Keyrune

Oracle Text

T: Add U or R.

UR: Until end of turn, Izzet Keyrune becomes a 2/1 blue and red Elemental artifact creature.

Whenever Izzet Keyrune deals combat damage to a player, you may draw a card. If you do, discard a card.

Card Rulings

10/1/2012 If Izzet Keyrune becomes a creature in a way other than its own activated ability, its last ability will still work.
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.