If there is a <Robin Mask> on your area, reduce the AP cost of this card in your hand by 1.

Choose up to 1 character on your opponent's Front Line with BP 5000 or less and retire it. Choose up to 1 <Robin Mask> on your area and give it "If your opponent would retire this character with a [Special], your opponent adds that [Special] to their hand instead." during this turn.