I got stuck after the 4th scroll. I figured out I could create new spells outside of the scrolls. I create new spells by combining the first two symbols from the 4th spell with the others. I thought I could kill the eye from that hallway by shooting a fire through the boulder and then moving the boulder in the empty gap left by the eye, but that didn't work. I think there needs to be some sort of hint on what we are supposed to do at that point.
Shame I didn't figure it out, didn't even reach the looping part of the game :/
The art style was cool and the magic system is interesting! Well done :)