Unyielding Fortitude is a Weiß Schwarz card from Batman Ninja BNJ/SX01-028. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【COUNTER】 If you do not have a 《Villain》 character, this card cannot be played from your hand. Choose 1 of your characters, and that character gets the following ability until end of turn. "【CONT】 This card cannot become 【REVERSE】."