This was fun. I like the gameplay loop, and I enjoyed the voice acting as well.
The controls felt a bit difficult to use though -- specifically, having my left hand be on WASD and right hand on then some of the spells on the right side of the number row made them a bit difficult to easily reach. So once I got to the spells that have the single use stuff, I just used them exclusively and ignored almost everything from about 4 and up (except the 0 spell, which didn't use too much energy, so I could just leave that on permanently. The other spells that was an on/off toggle didn't seem worth the energy expenditure, so I just never used them. (Though I did every now and again just spam all the minion buttons real quick, which was maybe the intended purpose for those anyway?)
Overall, I had fun playing this, so that seems like a success.