Aggravate

Pour the vialed blood on your hand and touch an existing wound that you can see on a creature. Make a melee spell attack against the target creature. On a hit, the material components are consumed and you deal 6d6 of the same type of damage that originally caused the wound you are focusing on. The amount of blood used in the casting of this spell determines the amount of additional damage you deal. This additional damage is the same damage type as the original type to cause the wound.

Bonus Damage