Sakashima the Impostor (SOK-053) - Saviors of Kamigawa Foil

You may have Sakashima the Impostor enter as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}: Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."