Dreadwing Flutter

You channel nightmarish magic into yourself with a rush of wind before launching a bolt of necrotic energy that takes the form of a crackling deep-dark-purple blob with bat-like wings at a target within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 necrotic damage and must succeed on a Wisdom saving throw or be frightened until the end of its next turn. A creature immune to necrotic damage automatically succeeds on the saving throw against being frightened.

At Higher Levels. This spell's damage increases by 1d6 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).