最期のステージ is a Weiß Schwarz card from 戦姫絶唱シンフォギア SG/W19-071. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Choose up to 2 of your 《音楽》 Characters, during this turn, those cards get +2500 Power, and gains the following ability. 『【AUTO】 ［①］ When the card battling this card becomes REVERSE, you may pay the cost. If you did, choose 1 Character in your Waiting Room, return it to Hand.』
This card was printed in Japanese only; the English text above is an unofficial community translation.