{T}: Add {U} or {R}. {U}{R}: 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.
2012-10-01
If Izzet Keyrune becomes a creature in a way other than its own activated ability, its last ability will still work.
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.
2013-04-15
Until the ability that turns the Keyrune into a creature resolves, the Keyrune is colorless.