Creature — Spirit 5/1, 3UU (5)
Mythic Rare
Flying
{1}{U}: Mirror-Mad Phantasm's owner shuffles it into his or her library. If that player does, he or she reveals cards from the top of that library until a card named Mirror-Mad Phantasm is revealed. The player puts that card onto the battlefield and all other cards revealed this way into his or her graveyard.
Illus. Howard Lyon

9/22/2011: You can only activate the ability if you control Mirror-Mad Phantasm, even if you don't own it.
9/22/2011: If no card named Mirror-Mad Phantasm is revealed (possibly because it was a card copying Mirror-Mad Phantasm or it was a token), all cards from that library will be put into their owner's graveyard.
9/22/2011: If another creature (such as Necrotic Ooze) gains Mirror-Mad Phantasm's activated ability, its owner reveals cards until he or she reveals a card named Mirror-Mad Phantasm.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern