Gishki Psychelone (HA07-EN056) - Hidden Arsenal 7: Knight of Stars Unlimited

You can Ritual Summon this card with any "Gishki" Ritual Spell Card. Once per turn: You can declare 1 Monster Type and Attribute; look at 1 random card in your opponent's hand, and if it is a monster of the declared Type and Attribute, shuffle it into the Deck. Otherwise, return it to the hand.