Picking up from last time, here’s a very simple magic system for the Labyrinth Adventure Game. It’s heavily inspired by Ben Milton’s Knave, which is fitting since he wrote the adventure portions of Labyrinth. Effectively, spells are simply one-use scrolls (or whatever form you want them to appear as; I picture them etched on little stone tablets) that allow for a very specific instantaneous or short-duration special effect.
Check ’em out!