Too easy once you configure your deck with lots of +Builders, +Sorcerers and +Soldiers since those are permanent (except for Curse, which is way overpriced and can almost never be used anyway). Then throw out all the small junk (Base +2, Attack 2, etc) and you have a very easy game.
That was a really amazing game. I've never done real programming before, but this made it pretty interesting indeed. 5/5d this, I've been stuck on lv 10 forever but I finally figured it out today, yay! I ve finished it. Should be a sequel.