三矢の教え うーさー is a Weiß Schwarz card from 【スペシャルセット】うーさーのその日暮らし Woo/SE19-004. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When your other 《謎》 Character attacks, during that turn, this card gets +1000 Power. 【AUTO】 When this card attacks, reveal the top card of your Deck. If that card is not a 《謎》 Character, during that turn, this card gets -2000 Power. （Return revealed cards to its original position）
This card was printed in Japanese only; the English text above is an unofficial community translation.