Elemental HERO Grand Neos [CT04-EN001] Secret Rare

"""Elemental Hero Neos"" + ""Neo-Spacian Grand Mole""
This card can only be Special Summoned from your Fusion Deck by returning the above cards you control to the Deck. (You do not use ""Polymerization"".) Once per turn, you can return 1 monster your opponent controls to its owner's hand. This card returns to the Fusion Deck during the End Phase."