You channel dark magic to cause your teeth or fingernails to sharpen, ready to siphon the life from your enemies. Make a melee spell attack against one creature within 5 feet of you. On a hit, the target takes 1d6 necrotic damage, additionally you gain a number of temporary hit points equal to your Spellcasting modifier. After you make the attack, your teeth or fingernails return to normal.
The spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6) and the healing increases by 1d4 for each level increasing at 5th level(1d4), 11th level(2d4) and 17th level(3d4).
Note: Temporary Hit Points don't stack
"If you have temporary hit points and receive more of them, you decide whether to keep the ones you have or to gain the new ones. For example, if a spell grants you 12 temporary hit points when you already have 10, you can have 12 or 10, not 22."-DnDBeyond Rules Page
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