Moons

The Plane of Mernis is orbited by two moons. Urzer and Savine. Many sages believe that these two moons are actually minor planes of Abyssal and Infernal natures. Savine is a red moon that orbits Mernis on a 28 day cycle, while Urzer is a white moon that is on a 65 day cycle.

Moon Speech
Both Devils and Demons use the same script, although both types of the "spoken" languages are vastly different.