First, before I post my deck, I have a question to all the Blue Mages....
Where is Force of Will?  It's only an uncommon!
You'll need it against this deck....
Classic Burn
4x Channel (uncommon)
4x Fireball
4x Incinerate
4x Fireblast
4x Lightning Bolt
4x Rolling Thunder
4x Shock
4x Red Elemental Blast
4x Sonic Burst
4x Lotus Petal (common!)
6x Forest
10x Mountain
Plan:  Easy.  Drop a Mountain, a few Lotus Petals, and Channel/Fireball for 20.  If that doesn't come up right away, burn at will.