Losing Streaks .. as a strategy??
If you win more than one round in a row, you will start a win streak and this will give you extra gold per round as long as you continue winning. Interestingly, if you keep losing in a row, you will also gain gold for losing streak. THIS I know is no the most ideal case but at least you will start to accumulate some gold and this can be used as a strategy at times. If you opt for this strategy for some reason, the key here is not to lose too heavily. The more units your opponent has on the board, you'll lose more health, so put up a fight and eliminate as much units as possible but not all of them.