Curse

One creature you can see must make a Wisdom saving throw. On a failure, it has Disadvantage on ability checks and attack rolls, and it takes an extra 1d4 Necrotic damage whenever you hit it with an attack. The curse ends early if you or your allies reduce the target to 0 Hit Points. This is a conversion of the source's Oozegod or Snailgod-only curse; the DM can restrict targets to servants of that power.