You can Set this card from your hand to your Spell & Trap Card Zone as a Spell Card. During your opponent's turn, when this Set card in the Spell & Trap Card Zone is destroyed and sent to your Graveyard: Special Summon it. If this card is Special Summoned during your opponent's turn: "Artifact" monsters you control cannot be targeted or destroyed by your opponent's card effects until the end of this turn.
