It felt hard to cast and move simultaneously until I discovered that I can infinitely type. So I was spam pressing "HOT" keys as fast as I could while running around. I had a long line saying "HTOHTTOTOHOHTOHTOH" but a couple of times per second I'd get a fireball in and that was pretty fun :)
I wish I could find some "HEAL" spell though. Maybe there is one, I just couldn't find it.
Also enemy spawn rate feels quite high at the moment, it didn't allow me to look at the surroundings or explore much.