Unity of Rings
On the Outer Planes, the Great Road is the band of the ring, and all the planes are its gemstones. Following the Great Road, Mechanus leads to Acheron, Acheron leads to Baator, Baator leads to Gehenna, and so on. By following the road, the order never changes.
The powers think in rings, too — circles upon circles of logic that go nowhere. A body’s always got to watch out for their endless snares.