Artéfact Mjollnir EXFO-FR028

You can play this card from your hand in your Spell & Trap Zone as a Spell. During your opponent's turn, if this card Set in the Spell & Trap Zone is destroyed and sent to your Graveyard, Special Summon it. If this card is Special Summoned during your opponent's turn, target 1 "Artifact" monster in your Graveyard; Special Summon it in Defense Position, also you cannot Special Summon monsters (except "Artifact" monsters) until the end of the next turn. You can only use this effect of "Artifact Mjollnir" once per turn.