Blood Rain

Black clouds form in an area within range, pouring forth sheets of blood in a 60-foot radius, 120-foot high cylinder within range. A creature that starts its turn within the cylinder or enters the cylinder for the first time must make a Constitution saving throw. On a failed save, the target takes 5d10 necrotic damage and is poisoned for 24 hours. On a successful save, the target takes half damage and is not poisoned.