Dark Magician the Dragon Knight

Level 8 DARK/Dragon Fusion Effect
3000 ATK / 2500 DEF

"Dark Magician" + 1 Dragon monster
This card's name becomes "Dark Magician" while on the field or in the GY. Your opponent cannot target Spells/Traps you control with card effects, also they cannot be destroyed by your opponent's card effects.

Rulings – Yugipedia

Printings:

Legendary Dragon Decks: LEDD-ENA00 (Ultra Rare) - 2017-10-05
Ghosts From the Past: The 2nd Haunting: GFP2-EN125 (Ultra Rare) - 2022-05-05
Quarter Century Bonanza: RA03-EN268 (Platinum Secret Rare) - 2024-11-07
Quarter Century Bonanza: RA03-EN268 (Quarter Century Secret Rare) - 2024-11-07

Prices:

Cardmarket: 0.63 €
TCGplayer: $ 0.98