Dungeons & Dragons: Dragonshard

In the world of Eberron, the dragon Siberys was shattered by her brother Khyber in an ancient war, and her remains formed a ring encircling the world. The largest fragment, the Heart of Siberys, fell to the continent of Xen'drik, creating a storm-swept mountain range and giving rise to the Lizardfolk. Now three factions converge on the Heart to claim its power: the Order of the Flame, a holy military order seeking to harness it for good; the Umbragen, dark elves who wish to drain it and unlock the secrets of their sunken city; and the Lizardfolk, native guardians who have protected it for centuries.