Masked Beast Des Gardius

Level 8 DARK/Fiend Effect Monster
3300 ATK / 2500 DEF

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 2 monsters, including at least 1 "Grand Tiki Elder" or "Melchid the Four-Face Beast". When this card is sent from the field to the Graveyard, equip 1 "The Mask of Remnants" from your Deck to 1 monster on the field.

Rulings – Yugipedia

Printings:

Tactical Evolution: Special Edition: TAEV-ENSE1 (Super Rare) - 2007-09-12
Speed Duel: Battle City Box: SBCB-EN107 (Common) - 2020-11-26
Speed Duel: Battle City Box: SBCB-EN107 (Secret Rare) - 2020-11-26
25th Anniversary Ultimate Kaiba Set: KC01-EN023 (Ultra Rare)

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.38