As this would enter play from a hand, you may return it to its owner's hand.If you do, put 1 card from your hand face down into one of your attack zones. Then, your opponent may declare "That's a Werewolf!". If they do, then flip the card put into play by this effect face up. If the card flipped up is a «Moonlit Werewolf»> or a non-unit card, destroy it. If your opponent doesn't declare "That's a Werewolf!", then keep that card face down and treat it as a unit of level 2, 5 ATK, 4 HP, 2 STK, with no faction or attributes.