First to be told is the legend of the beings named Gog and Magog. Brothers of thought and kin to the gods, these two held great power over the Fifth after the Sundering. They first resided in the shadowed corners of the Celestial Realms taking council from the other powers of the Dark. At their bidding they hunted Merrith, the sister of Vivoria, and slew her with sword and hammer. Gog took the goddess' face as a trophy and symbol of their defiance. The lords of Light were deeply angered and cast them out and barred the Gates to the Celestial Realms to them.
Gog and Magog fled to the Fifth, and there they began to form legions who carry the taint of their violence which infects like a disease. Their legions of fell creatures ruled over the land, tainting everything under their dominion. Only the greatest cities survived the legion's advances and many were destroyed. Atlantis, Ur and the elven city of Celebair became islands of light in a darkening night.
Vet- Auun, angered by such a light punishment for godslaying, sired a christos to a human woman of Ur. This man grew to become an honoured warrior, for it was obvious to all to saw him that he was possessed by the strength of the gods. Ikslander they named him, and armies grew under his lead. Such was his strength of arms and skill with the tactics of war that he slew the Legions and chased them until they were cornered into a deep valley. Ikslander fought the brothers and took the hammer and sword and broke them. He then rent Magog's armour from his form and Mirrith's face, which had been fashioned into a three eyed mask, from Gog. Using the last of his power he shut the mountains, locking Gog and Magog with their Legion until the end of the Earth.
Ikslandir went on to create an Empire and he ruled long. The spoils of the battle he locked into chests of dwarven metal, and when he passed from the mortal world they were brought with him to burial. The Altantians brought him to the Sacred Valley, where those touched by the lords of Light are put to rest, and entombed with the chalice spoken of old, his half-elven queen and the Everliving Rose.
At the end of the Earth a human will awaken him, and his treasure will be stolen. When the Mask and Armour are worn will Gog and Magog awaken and begin to delve a way through the mountains. Only with these tokens, and the waking of the brothers, can the Four be overthrown and the remnants of the world spared. If the Four should be banished, for another aeon, the Everliving Rose may be planted and Eden grow anew.