Karn, the Great Creator (Stained Glass) [Secret Lair Drop Promos] Grand Prix Promos Set: Commander 2011 Oversized Type:

Set: Commander 2011 Oversized Type: Legendary Creature — Human Wizard Rarity: Mythic Cost: {2}{G}{U}{R} Whenever you cast an instant or sorcery spell

except it doesn't copy that creature's color and it has this ability

If this ability has been activated four or more times this turn

Includes instructions for writing cards that don't suck (which you will almost certainly ignore)

if you control an artifact

Karn, the Great Creator (Stained Glass) [Secret Lair Drop Promos] Grand Prix Promos Set: Commander 2011 Oversized Type:Set: Secret Lair Drop Promos Type: Legendary Planeswalker Karn Rarity: Rare Cost: {4} Activated abilities of artifacts your opponents control can't be activated. +1: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value. 2: You may reveal an artifact card you own from outside the game or choose a face up artifact card you own in exile. Put that card into your hand.