Call of Hadar

You evoke the power of Hadar, the Dark Hunger. A cacophony of echoic whispers and piercing screeches emanate from you, affecting creatures in a 20-foot-radius sphere centered on you. The sphere moves with you. Creatures of your choice that enter the area for the first time or start their turn there must make a Wisdom saving throw. On a failed save, a target takes 2d6 necrotic damage, 2d6 psychic damage, and becomes frightened of you for 1 minute as the whispers and screams penetrate its mind and drain its vitality. On a successful save, a target takes half damage and suffers no other effect. Affected creatures can make a Wisdom saving throw at the end of each of their turns if they have moved outside of the spell's area, ending the frightened condition on themselves on a success.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the necrotic damage or the psychic damage (your choice) increases by 1d6 for each slot level above 3rd.