Leviathan [The Dark] Duels of the Planeswalkers Promos 2012 then return it to the

then return it to the battlefield under its owner's control

Ridiculous

Set: Premium Deck Series: Slivers Type: Legendary Creature — Sliver Mutant Rarity: Mythic Cost: {W}{U}{B}{R}{G} {3}: Search your library for a Sliver card

Set: Shards of Alara Type: Legendary Planeswalker — Elspeth Rarity: Mythic Cost: {2}{W}{W} +1: Create a 1/1 white Soldier creature token

Leviathan [The Dark] Duels of the Planeswalkers Promos 2012 then return it to theSet: The Dark Type: Creature Leviathan Rarity: Rare Cost: {5}{U}{U}{U}{U} Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan. Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)