Arena Tournament
From WoWWiki
The World of Warcraft Arena Tournament is a 3v3 Arena tourney taking place outside of the standard end-of-arena-season tournament on a special event realm where all PvE content has been disabled.
Players are not allowed to copy characters to the event realm, but instead pay $20 (or, if they're Canadian, write an essay) for access and are allowed to create three level 70 characters with free access to enchants, gear, gems, gold, and pets. All players randomly spawn in one of the Tournament-specific starting areas, instead of the standard eight race-based spawnpoints.
External links
For more information, see the list of special Arena Tournament NPCs and the official information on the Blizzard website:

