D - Chain (SGX1-ENB18) - Speed Duel GX: Duel Academy Box 1st Edition

After activation, this card is treated as an Equip Card, and equip it to a Destiny HERO monster on your side of the field. The equipped monster gains 500 ATK. When the equipped monster destroys a monster your opponent controls by battle and sends it to the Graveyard, inflict 500 damage to your opponent.