Voltaic Key [Urza's Saga] Effect Fusion Monster destroy the face-down monster immediately

destroy the face-down monster immediately with this card''s effect without flipping it face-up or damage calculation

during damage calculation (in either player's turn): You can pay 2000 Life Points once per battle

select your opponent's monster and equip it to this card (you can only equip 1 monster at a time to this card)

if a Beast-Warrior-Type "Bujin" monster you control battles an opponent's monster: You can send this card from your hand to the Graveyard

During the next Standby Phase

Voltaic Key [Urza's Saga] Effect Fusion Monster destroy the face-down monster immediatelySet: Urza's Saga Type: Artifact Rarity: Uncommon Cost: {1} {1}, {T}: Untap target artifact. The key did not work on a single lock, yet it opened many doors.