Age of Alorahd or Before the War of Cataclysm

While Vaysoom existed before Alorahd discovered it and chose to protect and defend it when he saw the peaceful balance of the world destroyed by a natural cataclysm, one that opened doorways into neighboring planes and causing some sections of those planes to collapse in on the mortal world, altering the planet and it's entire system of Canto Laseh forever.