Praetorhoof Behemoth [Unknown Event] Magic 2015 Prerelease Promos and it has “{2}{U}{U}: Return

and it has “{2}{U}{U}: Return this creature to its owner's hand at the beginning of the next end step

or if they'd been created by the Phyrexian overlay

where X is the total power of the cards exiled this way

When Emrakul is put into a graveyard from anywhere

Set: March of the Machine Commander Type: Creature — Phyrexian Fox Rarity: Rare Cost: {3}{W} Whenever one or more Phyrexians you control attack

Praetorhoof Behemoth [Unknown Event] Magic 2015 Prerelease Promos and it has “{2}{U}{U}: ReturnSet: Unknown Event Type: Creature Phyrexian Praetor Beast Rarity: Common Haste When Praetorhoof Behemoth enters the battlefield, you may search your library and reveal any number of Praetors from among cards in your library and hand. Creatures you control gain trample and get +X +X until end of turn, where X is the number of Praetors you have showing from among your hand, library, battlefield, and graveyard. Then shuffle.