Eye of fire

The eye of fire spell causes the priest's left eye to emit a blazing beam of fire, which burns with the intense heat of the sun. A creature struck by the narrow beam of flame suffers damage, with undead creatures suffering greater damage. The intense beam of heat can also ignite combustible items or melt other items.

This spell originally appeared in this form in Powers and Pantheons for the AD&D game from TSR. Its use here is for the purposes of providing context for the campaign only.