Darkning bolt

The darkning bolt spell creates a bolt of "negative lightning." This bolt is so black that anyone seeing it has a chance of going blind for half an hour. Black sparks and tendrils of darkness play about the bolt for the brief instant it exists. The bolt starts up to 180 yards away from the caster and extends 60 feet farther. If the darkning bolt strikes a solid surface (such as a wall), it bounces back toward the caster until the total length of the bolt is 60 feet.

Note: Darkning bolt originally appeared in this form in Wizard's Spell Compendium, Volume 1 for the AD&D game from TSR. His use here is for the purposes of providing context for the campaign only.