Read more about Vecna at: Wikipedia

Official Site: Wizards of the Coast

In the World of Greyhawk campaign setting for the Dungeons & Dragons roleplaying game, Vecna was a powerful wizard who became a lich. He was eventually destroyed, and his left hand and left eye were the only parts of his body to survive. Even after he achieved godhood—being a member of the third edition's default pantheon of D&D gods (the pantheon of Oerth)—he is still described as missing both his left eye and left hand. Vecna's holy symbol is an eye in the palm of a left hand. Vecna was also named as one of the greatest villains in D&D history by the final print issue of Dragon.

Vecna's "right hand man" and then ultimately his betrayer, is Kas the Bloody-Handed, a vampire, whose sword, the Sword of Kas is also an artifact.

In the fourth supplement to the original D&D rules, Eldritch Wizardry, Brian Blume invented two artifacts he called the Hand and Eye of Vecna. These were supposedly the only remnants of an evil lich, Vecna, who had been destroyed long ago. The name Vecna was an anagram of Jack Vance, the fantasy author whose "fire-and-forget" magic system is used in Dungeons & Dragons.

The Hand and Eye of Vecna were also mentioned in 1979's Dungeon Master's Guide on page 124. During the "Advanced Dungeons & Dragons" years, Vecna was regarded only as a legend or myth, a long-destroyed legendary lich of great power, only able to threaten player characters who dared to use his Hand and Eye.

Vecna has not been a contender in any CBUB matches.