Sword of Kusanagi (TDGS-EN054) - The Duelist Genesis 1st Edition

Equip only to a Spirit monster. During battle between the equipped monster and a Defense Position monster whose DEF is lower than the ATK of the equipped monster, inflict the difference as Battle Damage to your opponent. When the equipped monster is removed from the field and this card sent to the Graveyard, add this card to your hand.