Blood Bolt

You hurl a shard of crystallized blood from your body at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 piercing damage and must make a Constitution saving throw. On a failed save, it can’t take reactions until the start of its next turn.

Blood Magic. When you cast this spell, you can choose to deal 1 damage to yourself, this damage ignores resistances and immunities. When you do this, add your Constitution modifier to the damage dealt.

At Higher Levels. This spell’s damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).

Spell created by u/Dracovich of Reddit for The Shadowheart Apocrypha