Orcus chooses a point on the ground that it can see within 100 feet of it. A geyser of caustic blood erupts from the ground at that point and rains down in a 40-foot high, 10-foot cylinder. Each creature in that area must make a DC 24 Dexterity saving throw, taking 24 (7d6) acid damage on a failure, or half as much damage on a successful one.