I actually have a very similar Forcemaster deck with some minor differences. I never posted it here, as I'm still polishing it, but I might do it soon.
Here are some of my points:
1) Why do you need Eagle Wings? Your Thoughtspores are flying anyways, and this enchantment doesn't work on Mages.
2) I don't think that you need 2 Forcefields. They are too costy and I don't think that the enemy mage will have time and resources to dispel it.
3) I'd add a Regrowth enchantment, as your belt might get dissolved and you may want to have an alternative.
4) Squeezing in couple more Dissolves might help too, as you want to have enemy mage naked from any kind of armor. Doublestrike attack works great when you hit people without defense.
5) Hand of Bim Shala looks great, but I never actually had a chanse to use it - not enough actions to cast it. During several first turns you probably want to cast Battle Forge, one or two Thoughtspores, some enchantments and run towards the enemy. In my games the confrontation usually started at turn 3-4, depending on the enemy's strategy and the games ended quick. You want to gave your full action available for attack and your quick action for pull, dissolve, dispel or anything like that.
Or maybe I'm just bad with Forcemaster :-)