I have an AC 3 Game Code to trade DOTA 2

So i recently purchased a GTX 660 graphics card and along with the purchase i had received a AC3 Game Code to download it. Me not being a fan of the AC series i would love to trade this for Keys / Items from Dota 2 We can include a middleman and to show will link site to redeem http://www.geforce.com/games-applications/pc-games/assassins-creed-3/deals-promotions