Permanently? Why not just set power to zero?

Is this an Instant, Sorcery or Enchantment - Aura?
And I agree with Vitenka this would be cleaner as "Target creature's power is 0 until end of turn."
I would also lose the old-school cantrip effect and just use the regular "Draw a card"

Idk if instant is too powerful, but I like it. Thx for the suggestions.

Fascinating. Reminiscent of Curtain of Light, but also works as Shielded Passage. (And in a blue way even though those cards are white.)

I worry this might be a bit better than other cards Wizards would like to print - or indeed, have printed: Bewilder, Disorient; though Protect // Serve suggests they're happy to pretty much obsolete Disorient anyway. This is also so much better than Fleeting Distraction it's funny.

But for all that, this is just basically Curtain of Light, and I think it's fine.