Blood Rain

When blood is drawn from an enemy you can take out the blood, dealing 1d4 of damage, and then they are crystalized into shards. This falls from the sky and harms everybody in a 20 ft radius, the rain has to roll to see if it bypasses the enemies armor of everyone in the 20 ft radius, and it does 2d6 of damage. Because of the radius sometimes causing your friends to get hurt. This also hurts you, so use this sparingly.