http://www.pcgamer.com/the-hearthstone-oktoberbrawl-offers-free-card-backs-for-twitch-prime-members/ >The Hearthstone Oktoberbrawl is now underway, pitting Team Void—Dog, Thijs, and J4CKIECHAN—against Team Light—Kripparrian, Reynad, and Alliestrasza—in a month-long battle for ultimate (at least until the next time) supremacy. The catch is that each pro must use a fresh account for the event, ensuring that everyone starts off on equal footing. Fans can get in on the action too by using one of two free card backs available through Amazon Prime battling to do battle on behalf of their chosen side.  >Each "Oktoberbrawler" will be given ten Classic packs and a Welcome Bundle to start their new account, and on Monday of each week from today until October 10, will be given another ten packs from two different expansions. On Wednesdays, each team member will also receive "a portion of a second pack award based on a percentage of total wins earned in Ranked Play by players using their team’s card back."