Draining Nova
Casting Time
Range
Area
30
Area Shape
Components:
a handheld silver cauldron worth at least 50 gp
Duration:
Instantaneous
Saving Throw
Special
Creatures in the area make a Constitution saving throw , taking 4d8 necrotic damage and suffering one level of fatigue on a failed save and avoiding the fatigue on a successful one. For each level of fatigue you cause in this manner, you gain 1d8 temporary hit points.
Source