Mirror Resonator

While this card is in your hand or Graveyard, if your opponent controls a monster that was Special Summoned from the Extra Deck, and you do not: You can Special Summon this card, but banish it when it leaves the field. You can only use this effect of "Mirror Resonator" once per turn. Once per turn: You can target 1 face-up monster your opponent controls; if this card is used as a Synchro Material this turn, treat this card's Level as that target's original Level.