Blood Blade

You summon from either yourself or another source a stream of blood that takes on the form of an edged weapon of your choice, and attack one creature within five feet of you on a successful hit the creature takes the damage of your chosen edged weapon. If that creature has blood you heal yourself for the same amount of the damage dealt to that creature.

At Higher levels the spell's healing effects increase from 5th level by 1d8 + your spellcasting modifier. This effect increases by 1d8 at 11th level (2d8 healing) and 17th level (3d8 healing) respectively.