勝手にすれば？ is a Weiß Schwarz card from なのはStrikerS NS/W04-045. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Choose up to 2 of your Characters, during this turn, they get +3000 Power.
This card was printed in Japanese only; the English text above is an unofficial community translation.