Tried this deck and made success an estimated of 80% at Masters.
Using red instead of White.
Control early game using Torch, Permafrost, Lstrike and Hailstorm
If the game already in control then play Scourge your opponent has no answer for sure.
play Rain of Frogs and hopefully you'll get his silencing minions
Flamestoker is an additional winning punch
The only thing is you'll get below 10 health most of the time before you control the game.