What i noted while playing the game in the browser :
When you select a potion, aim with your mouse and select another one, it throws it without having to left click.
I see that you're shooting by clicking the hotkey which maybe better to play with a controller, but i think it might be better if left click was used to throw the selected spell (i'm not used to this kind of game so i might be saying something stupid)
Also the potion amount in the inventory isn't going down when they are thrown
Otherwise, cool animation, the camera works well and the throwing path being 3D over 2D looks good