Mercurial Pretender [Magic 2015]Set: Magic 2015 Type: Creature Shapeshifter Rarity: Rare Cost: {4}{U} You may have Mercurial Pretender enter the battlefield as a copy of a creature you control, except it has "{2}{U}{U}: Return this creature to its owner's hand." The king went off to find himself. Imagine his terror when he succeeded.

Set: HeartGold & SoulSilver: Call of Legends Type: Grass Rarity: Uncommon Retreat cost: Colorless

Activate only once each turn

"The specimen seems to be broken

but to fully learn their physical capabilities

Set: Revised Edition Type: Instant Rarity: Rare Cost: {1}{W}{W} The next time a source of your choice would deal damage to you this turn

Set: XY: Evolutions Type: Colorless Rarity: Secret Rare Retreat cost: 0

Set: EX: Power Keepers Type: Grass Rarity: Holo Rare Retreat cost: Colorless

They drift in and out of shadow and ever on toward madness

Set: POP Series 2 Type: Fire Rarity: Rare Retreat cost: Colorless

you may create a token that's a copy of that creature

Set: Antiquities Type: Artifact Creature — Bird Rarity: Rare Cost: {5} Flying

Set: Black & White: Plasma Storm Type: Item Rarity: Rare Ace