Amplification

 You choose a creature you can see within range. The target must succeed on a Wisdom saving throw or become cursed for the duration. While cursed, whenever the creature takes damage from a melee attack it takes an additional 1d4 Void damage.

 A remove curse spell ends the effect.

At higher levels. When you cast this spell using a spell slot of 2nd-level or higher, the Void damage increases by 1d4 for each slot above 1st (maximum 4d4).