Homebrew
Necrotic Shroud
1-level Necromancy
Casting Time: 1 action
Range/Area: self (10ft aura)
Components: Verbal, Somatic
Materials: 1 rune
Duration: concentration, up to one minute
You are cloaked in ghostly decay. Creatures starting their turn within 10ft take necrotic damage equal to 1d6 + your Constitution modifier. They also have disadvantage on Charisma saves.
Once per turn, when a creature dies in the aura, gain temporary HP equal to your Death Knight level.
Available for: Death Knight