Gem-Knight Citrine

Level 7 EARTH/Pyro Fusion Effect
2200 ATK / 1950 DEF

1 "Gem-Knight" monster + 1 Pyro-Type monster
Must first be Fusion Summoned. If this card attacks or is attacked, your opponent cannot activate cards or effects until the end of the Damage Step.

Rulings – Yugipedia

Printings:

Duel Terminal 6a: DT06-EN035 (Duel Terminal Super Parallel Rare) - 2012-02-03
Hidden Arsenal 6: Omega Xyz: HA06-EN019 (Secret Rare) - 2012-07-24
Battles of Legend: Monster Mayhem: BLMM-EN139 (Ultra Rare) - 2025-08-28

Prices:

Cardmarket: 0.11 €
TCGplayer: $ 0.16