Blood Rite

Slashing your hand on a non-magical weapon's blade, you infuse the weapon with your own blood. You take damage equal to the weapon's damage dice. For the duration, the weapon has a +1 bonus to attack rolls and deals an extra 2d4 necrotic damage when it hits.

At Higher Levels. When you cast this spell using a spell slot of 5th or 6th level, the bonus to attack rolls increases to +2 and the extra damage increases to 4d4. When you use a spell slot of 7th level or higher, the bonus increases to +3 and the extra damage increases to 4d6.