Another of Leon’s Fairy Tale cards is confirmed for real life.
CP19-JP004 Okashi no Ie (Gingerbread House)
Continuous Spell Card
You can only use this card name’s (1) effect once per turn.
(1) During your opponent’s Standby Phase: You can have all monsters your opponent controls gain 600 ATK, then destroy as many monsters your opponent controls as possible with 2500 or more ATK, and if you do, gain 500 LP for each monster destroyed.