Amplify Damage (DN)

You create a cursed bond with the essence of the target(s), making them more vulnerable to attack. You may chose any number of creatures within the area of effect as a target, who must make a Charisma saving throw, or be cursed until the spell ends. On a failed save a creature will suffer an additional 1d6 points of necrotic damage whenever a successful attack roll is made against them.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher,  increase additional necrotic damage by +1, and the spell area for 5'. For example, casting at 4th level increases the damage to 1d6+3, and the spell area to 25'.