魂の取引 魔王くん is a Weiß Schwarz card from ステラソラ STS/W140-027. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【CONT】 This card cannot be chosen by your opponent's effects. 【CONT】 During your turn, all your other 《巡遊者》 or 《魔王》 Character get +1000 Power. 【AUTO】 When your other Character attacks, during this turn, you may give that attacking Character -1 Soul. If you did, during this turn, that attacking Character gets +2000 Power.
This card was printed in Japanese only; the English text above is an unofficial community translation.