Oh, I liked this game. The art is cohesive and controlling units felt good. The thing that bugged me (no pun intended) is the UX: having your players choose cards/units on a game they've never played isn't the way to go. I think having the player try units first, then choose cards (either in an intro or in a short tutorial) would've helped a lot!
Regardless, it's a great concept and using isometric view for such a game is a great idea.
Good work!