You wreathe your palm in necrotic energy, filling it with the stench of decay.
Make a melee spell attack - on a hit, the target takes 4d8 necrotic damage, and is afflicted with decay. When the target regains hit points while afflicted with decay, instead of regaining hit points, it instead takes necrotic damage equal to the amount of hit points it would be healed.
The target can make a Constitution saving throw at the end of each of its turns, ending its affliction on a success. The affliction also ends if the spell ends, or if the target has a spell such as Remove Curse or similar magic cast on them.
At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the target takes an additional 1d8 necrotic damage per level of spell slot above 3rd.
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