Atlas's Amplified Affliction

You place a curse on a creature that you can see within range. A faint crimson mist drifts around the target. The cursed creature has Vulnerability to the damage caused by the next Attack or Spell that hits or affects it within one hour. Once the target is damaged, the curse fades and the Spell ends.

Using a Higher-Level Spell Slot. You can target one additional creature for each spell slot level above 1.