Red-Eyes Black Dragon Sword #DRL3-EN066

DarkMonster

Must be Special Summoned with "The Claw of Hermos", using a Dragon-Type monster, and cannot be Special Summoned by other ways. If this card is Special Summoned: Target 1 other face-up monster on the field; equip this card to it. It gains 1000 ATK, and 500 ATK and DEF for each Dragon-Type monster on the field and in the Graveyards.