Original Bamboo Sword

Darkwing Blast

“The equipped monster gains 0 ATK. When the equipped monster inflicts battle damage by a direct attack: You can destroy all monsters your opponent controls. You can send this equipped card to the GY; equip 1 "Bamboo Sword" Equip Spell from your Deck to 1 face-up monster on the field, except "Original Bamboo Sword".”