During your opponent s turn: You can discard 1 Spell Trap Card; Special Summon 1 Dark Magician from your Deck (this is a Quick Effect). During your opponent s turn, if you activate a Spell Trap Card or effect while this card is in your Graveyard (except during the Damage Step): You can Special Summon this card, but banish it when it leaves the field. You can only use each effect of Magician s Robe once per turn.