Evigishki Soul Ogre (HA05-EN052) - Hidden Arsenal 5: Steelswarm Invasion Unlimited

Cannot be Normal Summoned or Set. Must first be Ritual Summoned with a "Gishki" Ritual Spell Card. Once per turn: You can discard 1 "Gishki" monster to target 1 face-up card your opponent controls; shuffle it to the Deck.