Curse of Decay

A grey beam of death and decay fires 90ft. 

Make a ranged spell attack against the target. On a hit, the target takes 1d8 necrotic damage.

The spell creates more than one beam when you reach higher levels: two beams at 5th level, three beams at 11th level, and four beams at 17th level. You can direct the beams at the same target or at different ones. Make a separate attack roll for each beam.