Vampiric Touch

Your hands become wreathed in shadow that can siphon life force from others to heal your wounds. Until the spell ends, the first time you make an unarmed strike on your turn, you can make a melee spell attack instead. On a hit, the target takes your unarmed strike damage adding your spellcasting ability modifier instead of your Strength or Dexterity, plus 3d6 necrotic damage, and you regain hit points equal to half the amount of necrotic damage dealt.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d6 for every 2 slot level above 3rd.

Reworked the spell to run off of unarmed strikes.