Based on first 3 episodes of this series:
Quite a nice piece there. Animation drawn-like gaveit a bit of what children would draw, but seing it animate one does see the difference. Maybe some more inking on the outline, but that's just my opinion.
The sound needs a bit of work on. Demon lady/door was almost inaudible most of the time, which then, when I automatically try to increase volume, is contrasted how some of the sounds become deafening. I understand that you have tried to get mysterious effect of the voice, but one would require some other approach, since I could not hear her say most of the lines. Definately needs more "natural" sound effects (magma splash sounds, traps sounds, heavy machinery)
All in all I like the idea of "overly lucky" wizard apprentice, so I'll keep watching.