Cultist's Wrath (v1.2)

A beam of crackling energy streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 force damage. The spell becomes much brighter when you reach higher levels: twice at 5th level, thrice at 11th level, and four times at 17th level. It increases in damage by an extra d8 every time it becomes brighter. The spell can be cast at higher levels, and adds 1d6 of damage for every spell level cast up to level 5.