Cannot be Normal Summoned / Set . Must be Special Summoned (from your hand ) by banishing 5 or more cards from your hand, field , and / or Extra Deck , face-down . Gains 100 ATK / DEF for each face-down banished card. Cannot be Tributed , nor used as material for a Fusion , Synchro , or Xyz Summon . Once per turn , at the start of the Damage Step , if this card battles an opponent'smonster : You can banish that opponent's monster, face-down.