Gishki Zielgigas (Duel Terminal Super Parallel Rare)

You can Ritual Summon this card with any "Gishki" Ritual Spell Card. Once per turn: You can pay 1000 Life Points, draw 1 card, and if you do, reveal it, then, if it was a "Gishki" monster, shuffle 1 card from the field into the Deck.