Spell of sunray, a level 7 attack or evocation spell that effectively focuses the power of the sun on its target (despite being in a dungeon), dealing either very powerful fire damage or simply instantly disintegrating the target. (A compromise could be powerful fire damage in most cases, with the target disintegrated if it reduces their HP to 0, but with undead always being disintegrated).

It could shoot a ray, but might be better off if it used smite targeting like a blessed scroll of fire to strike a single square you don’t have to be lined up with, effectively trading the ability to hit multiple targets for increased lethality.

Spell of control winds, a matter or evocation spell that fires a beam of wind that pushes monsters and objects away from the caster.