A little help after 30 tries

Once you get to trying any given battle for more that 30 tries (or more in many cases) it would be nice if the game gave you a little help. For example, guraneteeing a few gems of your needed colors on the board, or the ability to buy a barrier with gems before the start, or something. I’ve said it before – if it’s too hard, it you can’t win once in 50 tries, people will not play.