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