Wither

Casting Time: 1 action - Range: 60 feet
Components: V, S - Duration: Instantaneous
You sap the life from your target causing it to
wither as necrosis takes over. The target must
succeed on a Wisdom saving throw or take 1d8
necrotic damage. If the target is missing any of its
hit points, it instead takes 1d12 necrotic damage.
At Higher Levels: 5th level (2d8 or 2d12), 11th
level (3d8 or 3d12),and 17th level (4d8 or 4d12).