A Scene in the Summer, Kuroyukihime (AW/S43-E014 U) [Accel World -Infinite Burst-]

[AUTO] [(2)] When you use this card's " Backup", you may pay the cost. If you do, return all cards in your waiting room to your deck, and shuffle your deck. [ACT] [COUNTER] Backup 2500, Level 2 [(1) Put this card from your hand into your waiting room] (Choose one of your characters that is being frontal attacked, and that character gets +2500 power until end of turn)