Cloak of Suffering

The spirits of the dead and dying flit around you in a 15-foot Emanation for the duration, howling in pain and fear at their untimely demise.

When you cast this spell, you can designate creatures to be unaffected by it. Any other creature’s Speed is halved in the Emanation, and whenever the Emanation enters a creature’s space and whenever a creature enters the Emanation or ends its turn there, the creature must make a Wisdom saving throw. On a failed save, the creature takes 3d8 Psychic damage. A creature makes this save only once per turn.

Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 3.