This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except with the effect of Yubel. This card cannot be destroyed by battle. You take no Battle Damage from battles involving this card. When this face-up Attack Position card is attacked by an opponent's monster, before damage calculation inflict damage to your opponent equal to that monster's ATK. During your End Phase, destroy all other monsters on the field. When this face-up card is removed from the field, you can Special Summon 1 Yubel - The Ultimate Nightmare from your hand, Deck, or Graveyard.