The Ruby Sunstone is a mysterious magical dark item, capable of summoning evil forces, and boosting the current possessor's strenght and power. It also serves as the "key" to open Ogthar's sarcophagus, to which the evil warrior was imprisoned from within. Featured as a prime weapon in Dinotopia: Quest for the Ruby Sunstone, the Ruby Sunstone appears also in Heroes vs. Villains War, as one of the most dangerous weapons, possessed by the villains.

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