This card can only be Ritual Summoned with the Ritual Spell Card, 'Shinato's Ark'. You must also Tribute monsters whose total Levels equal 8 or more from the field or your hand. When this card destroys a Defense Position monster and sends it to the Graveyard as a result of battle, inflict damage to your opponent's Life Points equal to the original ATK of the destroyed monster.'
Atom 1.0
