So, i dont know if it's considered an exploit or a clever usage of game mechanics, but it's still can give you a little advantage before starting an arena, a bg, or an rbg.
What you have to do is, before the arena/bg starts, you use fist of fury or any kind of spell that consumes chi (not working with spinning fire blossom) to build your stacks of tigereye brew, in a bg you can stack up to 4 stacks before it starts, but i havent tried in arenas(probably only 2-3 stacks). i know it's not much, but i think it0s something easy to do,and it provides a little profit as the other exploit i posted about dark transformation stack before an arena starts.. please dont be rude if i'ts not an exploit or is it was already posted, i couldnt find it and i just wanted to help the community a little bit