"Elemental HERO Neos" + "Neo-Spacian Grand Mole"
Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization".) Once per turn: You can target 1 monster your opponent controls; return that target to the hand. During the End Phase: Shuffle this card into the Extra Deck.