Gishki Zielgigas

Level 10 WATER/Aqua Ritual Effect Monster
3200 ATK / 0 DEF

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.

Rulings – Yugipedia

Printings:

Duel Terminal 7b: DT07-EN081 (Duel Terminal Super Parallel Rare) - 2013-02-01
Hidden Arsenal 7: Knight of Stars: HA07-EN057 (Secret Rare) - 2013-04-26

Prices:

Cardmarket: 3.66 €
TCGplayer: $ 1.36