Oracle

Artifact 

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.

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele 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.

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