Hmmm... I've played with scattering wind in openEtG, that card replaces the hand with a new set of cards... sort of like an auto mulligan. Then it lets the caster draw a card for a cantrip like effect.
Overall, that card is certainly in no danger of being OP. However, it can be quite a useful card both as an annoyance / delay tactic and as a hand refresher.
I'm not such a huge fan of this variant. At least not in air. It seems to be stepping on time's toes a little too much. I would also miss the versatility of being able to use it to switch out cards in my own hand for new ones.