When this spell is cast, a brilliant ray of scorching heat slants down from the sky and strikes one target of the caster's choice. The victim is allowed a saving throw vs. spell to take half damage. Any creature struck by the ray sustains 1d6 points of damage, plus 1 point per caster level. Undead creatures and monsters vulnerable to bright light sustain 1d6 points of damage, plus 2 points per level of the caster. In addition to sustaining damage, living victims are also blinded for 3 rounds by the spell. The sun must be in the sky when sunscorch is cast, or the spell fails entirely. It cannot be cast underground, indoors, or in hours of darkness, although routine overcasts do not hinder the sunscorch.