Chaos Ancient Gear Giant

Level 10 DARK/Machine Fusion Monster
4500 ATK / 3000 DEF

4 "Ancient Gear" monsters
Must be Fusion Summoned and cannot be Special Summoned by other ways. Unaffected by Spell/Trap effects. Your opponent's monsters cannot activate their effects during the Battle Phase. This card can attack all monsters your opponent controls, once each. If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.

Rulings – Yugipedia

Printings:

Raging Tempest: RATE-EN041 (Super Rare) - 2017-02-09
25th Anniversary Tin: Dueling Mirrors: MP24-EN042 (Quarter Century Secret Rare)

Prices:

Cardmarket: 0.44 €
TCGplayer: $ 0.29