If this card is Special Summoned from your hand by a Spell effect: You can target 1 “Mischief of the Time Goddess” in your GY; add it to your hand. If you control a “Valkyrie” monster other than “Valkyrie Erste” (Quick Effect): You can banish 1 monster from your opponent s GY, then this card s ATK becomes equal to the banished monster s original ATK until the end of this turn. You can only use each effect of “Valkyrie Erste” once per turn.