Unholy Exsanguination

As part of the action used to cast this spell, you must make a melee attack with a weapon against one creature within the spell’s range, otherwise the spell fails. On a hit, the target suffers the attack’s normal effects, and necrotic energy ruptures the wound, dealing 1d6 necrotic damage to the target. If the attack roll results in a 20, you may make an additional weapon attack against the same target as a free action due to the overwhelming surge of blood lust.

This spell’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d6 damage to the target. Both damage rolls increase by 1d6 at 11th level and 17th level.