The Brawler's Guild took a temporary hiatus with 6.0.2，but have returned in Warlords of Draenor. Fights are now tuned to level 100 and has eight ranks (down from 10) by defeating bosses in the game. You can buy a pet, and wow mount, heirloom gears from Brawl'gar Arena Quartermaster with wow gold when fights reach to a  top level. Moreover, you can purchase Challenge Card from Vendors to defeat the stronger boss and reward a cooler title "Brawler".
A stack of Blood-Soaked Invitation is needed when entering into the Brawler's Guild, which can be bought from Black Market Auction House or field rares drops.
Brawlers will get a system reward-Brawler's Pass when he is on rank4. It can be mailed to players or sold on Auction House. They can gain one achievement and enter into Brawler's Guild after using these 2 items.  Once you have your invitation in place, you can queue up to start a brawl by talking to Brawl'gar Arena Grunt or Bizmo's Brawlpub Bouncer.
It needs some skills to defeat these bosses, different bosses should have different strategies, you will find that it is very easy to kill if you have a suitable strategy. Also, you can do some funny achievements with your friend.
The Brawler’s Guilds are going on hiatus, so what should we do before the Legion patch coming? Our time is limited to get the title, mount, and heirloom gears.