Blood Blade

You summon forth a blade formed from blood. 

The blade can be a dagger, sword, shortsword, greatsword, or longsword. You are considered proficient with this weapon, and it dealsand it deals the damage associated with a weapon of its type plus your spellcasting ability modifier. The weapon can be used to make melee attacks using your proficiency bonus plus your spellcasting ability modifier.

You may voluntarily lose 5 hit points owed to blood loss when you cast this spell. This damage cannot be reduced or negated in any way. If you do so, attacks with the blade deal an additional 1d6 points of necrotic damage. You can dismiss this spell as a bonus action. The blade vanishes if you are no longer holding it.

(summoned blades are created as a magic item)

 At Higher Levels: the summoned blade gains +1 magical bonus to attack and damage rolls for each spell level of 2nd  and above up to 5th level.