ウーサー・プリンシパル・キング・オブ・ダークネス 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/SE19-011. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【CONT】 All your other 《謎》 Characters get +1000 Power. 【AUTO】 CHANGE ［② Place 1 card into Waiting Room from Hand, place this card into Waiting Room］ At the beginning of your Climax Phase, you may pay the cost. If you did, choose 1 「皇帝陛下 うーさー」 from your Waiting Room, place it into this card's previous slot.
This card was printed in Japanese only; the English text above is an unofficial community translation.