J'ila'gar is a gladitorial arena in Lielm in which great warriors have fought for centuries. The sand itself predates the known empires but it is unknown if it existed in the time of the Drac'arn.
The floor of the arena is covered in a shifting, shadowless white sand that seems to have an effect on everybody who sets foot in the ring.
The magic sands drink of their blood when it is spilled. Once tasted, it will forever draw the warrior back to to the arena, calling like a siren's war cry.
Used in LincolnSilk's campaign, BloodInTheSands.
Look here for SandArenaGMNotes.