Blood Blade

You create a weapon of crimson energy, forged from your own vitality. The blade is razor-sharp and pulsates with a faint, rhythmic glow like a beating heart. While the spell is active, you may use your bonus action to intensify its power, but at a cost.

• Effect: The blade counts as a melee weapon with which you are proficient. It deals 3d6 necrotic damage on a hit and has the light and finesse properties. Instead of making a weapon attack, you use your spellcasting modifier for attack rolls with this blade.

• Life-Bound Weapon: When you cast this spell, you lose hit points equal to 1d6. Additionally, each time you hit a creature with the blade, you can choose to amplify the damage by 1d6, but doing so causes you to take 3 necrotic damage per extra die rolled. This damage cannot be reduced in anyway.

• Critical Effect: On a critical hit with the Blood Blade, the target must make a Constitution saving throw against your spell save DC or be wounded. A wounded creature takes 1d6 bleeding damage at the start of each of its turns until it receives magical healing or succeeds on a Constitution saving throw at the end of its turn.

• Scaling: When you cast this spell using a spell slot of 3rd level or higher, the base damage increases by 1d6 for each slot level above 2nd. When upcast, the wounding critical effect's bleeding damage increases by 1d6 for every slot level above 2nd.