Weiss Schwarz Rascal Does Not Dream Series Ephemeral Existence, Knapsack Kid SBY / W114-E036 Rare

[AUTO] [Put 1 climax from your hand into your waiting room] When your climax triggers, you may pay the cost. If you do, draw 1 card, choose 1 card in your hand, put it into your waiting room, choose 1 "Adolescence" character in your waiting room, and return it to your hand.
[ACT] [[REST] this card] Choose 1 of your "Adolescence" characters, and that character gets +2500 power until end of turn.