The macro cosmos spell, which created a multitutde of magically conjured stars he could direct and control at will. However, it required a great deal of concentration and he was stationary the whole time. He had them moving in orbits, over and over, as he had his eyes closed to focus on maintaining them.
Elsewhere, Astral the stair fairy, Zachary's loyal and loving companion floated nearby with a bag of cookies he got from the galley. The little star would nibble on them bit by bit, but watched as Zachary slowly moved the stars overhead. Though well beyond the star fairy's ability to understand, he could tell his friend was deep in training and working on his magic.