Nice CRT aesthetics.
LR Hand mechanic is a bit confusing, took me a bit of time to understand what's going on (at first I thought only 2 leftmost elements affect spellcasting). Same with the "Charge" spell - took me a bit of time to figure out what's going on.
Speaking of charge spell - it breaks the game. Costs almost nothing to cast, and when you charge to 500+ - the game kinda breaks. Bubble spell makes the game lag, most other spell just start spamming over and over again. Which is very cool, but also very not balanced. I also managed to get an item that gives me +1HP per cast, and Charge 500 + Spell makes you basically immortal. Very cool, but at that point I wished I had more enemies to kill - cuz they were dying too fast.
My biggest complaint is - when the spell is casting - you remember the first mouse position (at the moment of click) instead of the last (at the moment when the spell casting is finished and the projectile/spell effect is being summoned). It makes it very disorienting and hard to aim.