Equip only to a Normal Monster. Once per turn, the equipped monster cannot be destroyed by battle. At the end of the Battle Phase, if the equipped monster battled: You can Special Summon 1 "Phantasm Spiral Dragon" from your hand, Deck, or Graveyard, and if you do, equip this card to it, then, if your opponent has a card(s) in their hand, they discard 1 card. You can only use this effect of "Phantasm Spiral Wave" once per turn.