Blood Blade

You Summon Forth a blade formed from blood. The Blade can be a dagger (1d4), Shortsword (1d6) or longsword (1d10). you are considered proficient with this weapon and it has the finesse property. damage dealt is equal to the weapon summoned plus your spellcasting ability modifier. this spell can be used to make melee attacks using your proficiency bonus plus your spellcasting ability modifier.

you may voluntarily lose 5 HP when you cast this spell which cannot be negated in anyway. if you do so the blade will deal an extra 1d6 points of necrotic damage. for each 5hp lost, you may add an extra 1d6 of necrotic damage.

the blade vanishes if you are no longer holding it

the damage dealt is necrotic damage