The casting system is great. Especially for a player like me who doesn't play these kind of games, the visual nature of the patterns made it very easy to remember and also create the spells. (Not sure if this is a common mechanic, but I really appreciate it.)
I was excited by the first screenshot, but this is just concept art? Not a playable point of the game? It's a great style which could be expanded.
I think the movement of the spells could be sped up, currently too long for my liking. :)