Curse of Agony

The caster laces the very air with strands of agony, casting it like a gossamer net of pain on their enemies. Any creature within the area of effect must make a Constitution saving throw or become infused with agony. Upon a failed saving throw each creature effected by the curse takes an additional d6 of necrotic damage any time they would take damage. Upon a successful saving throw each creature takes an additional d4 instead.

At Higher Levels: This spell's damage increases by d2 when you reach 5th level (d8, d6), 11th (d10,d8) and 17th level (d12,d10)