Deep Magic Volume 1
Grim Siphon
1-level Necromancy
Casting Time: 1 action
Range/Area: Self
Components: Verbal, Somatic, Material
Materials: the skull of a tiny mammal or bird
Duration: Instant
Attack/Save: CON Save
Damage/Effect: Poison
You twist the forces of entropy around two creatures, bringing distress to one while staving off the demise of the other. A creature you can see within range must make a successful Constitution saving throw or take poison damage equal to 1d4 + your spellcasting ability modifier. Another creature you choose that is within 5 feet of the target regains hit points equal to half the amount of poison damage dealt.
At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the poison damage increases by 1d4 for each slot level above 1st.
Available for: Cleric, Druid, Sorcerer, Warlock with Dark Specialization