Trio's Melody, Riko Sakurauchi (SIS/W109-E064 R) [Love Live! School idol festival 2 MIRACLE LIVE!]

[AUTO] [(2)] When you use this card's " Backup", you may pay the cost. If you do, return all cards from 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 1 of your characters that is being frontal attacked, and that character gets +2500 power until end of turn)