もう一つの聖剣 is a Weiß Schwarz card from シャイニング・フォース イクサ SE/S04-021. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
All your Characters, during that turn, get +3000 Power and +1 Soul.
This card was printed in Japanese only; the English text above is an unofficial community translation.