Shadow Barrage

When you cast this spell, you launch 1 ray of shadow energy toward a target within range of the spell. Make a ranged spell attack against it; on a hit, the target takes 10d6 shadow damage. For the duration of the spell, you can launch a new ray using your bonus action; you can launch up to 8 rays using this spell.

At Higher Levels. When you cast this spell by spending Mana points equal to an 8th-level spell or higher, you can launch one additional ray for each spell level above 7th.