>>95968612
If you recall the androids from DBZ, the first ones had life absorption abilities.


Sapping health
>at the end of your turn, if you hit a creature with a weapon attack, gain PB temp HP.
Steal life
>Once per turn when you hit an enemy with an attack roll you can deal additional necrotic damage equal to a roll of your hit die + CON mod. you regain HP equal to the damage dealt by this trait. You can use this feature a number of times equal to your 1+ your Con Mod (minimum of 1). You regain a use when you finish a short rest and you regain all uses when you finish a long rest.
Absorbtion shield
>you know the absorb elements spell and can cast it with this trait a number of times equal to your proficiency bonus. When you cast absorb elements, the damage increases to 2d6 and it is always force damage instead of the type it absorbed. You regain their use when you finish a long rest.
Drain life
>you know the Life transference spell and can cast it with this trait. you can't cast it again this way until you finish a long rest. When cast Life transference, you can instead reverse the rolls: choose a target an dmake a melee spell attack roll against a creature within 5 ft of you. On a hit, the target takes 4d8 necrotic damage as if they cast the life transference spell, and you regain hpoints equal to twice the necrotic damage dealt.