This card is so op and broken because it destroy all spell/trap card on your opponent side of the field without any cost,so that card shouldn't be released because we have Pegasus skill Creator and Mai skill harpie last will(that skill so hard to activate it)
Sad they don't change the format or card rules a bit. Limits the cards able to be used. They already have this with Dark Magician. Just make it so only Harpie Lady Sisters can use it or if you have 3 'Harpie Ladies' On the field. I know this idea isn't perfect but still. It really would be no different than Dark Magician spell Dark Magic Attack.
There's a couple that work differently to how they do in the TCG, even though they use the TCG wording. (Hallowed Life Barrier is a good example of this.) Not relevant in this case, but something to keep in mind.