Hearthstone: Heroes of Warcraft recently added the 'Tavern Brawl' gameplay mode, a weekly challenge that uses custom rules and cards to pit players against each other in exciting custom games. This week's Tavern Brawl, starting on August 19, is called The Grand Tournament Match and will allow players to test unreleased cards from the upcoming Grand Tournament expansion.

Blizzard unveiled The Grand Tournament last month, detailing several of the new cards and abilities the expansion would include. This week's Tavern Brawl will feature two heroes from the expansion, each with their own selection of brand new cards that can be used for the first time. The Brawl runs through August 24, but no release date for The Grand Tournament has been given.

Wednesday’s Grand Tournament Match features a thrilling Brawl between two potent forces. One, led by that mysterious master of magic, Medivh, will be packed with minions eager to heed your call to battle and power up with Inspire. Standing against them will be the mistress of the hunt, Alleria, along with a full cadre of master jousters who are poised to grow mighty with each contest won.