Talk:Battle Arena/@comment-99.156.169.50-20130617171434/@comment-4830404-20130617173104

Make sure you check the percentages under the appropriate level. The calculator does not tell you to use any dragon, you have to look and figure out the option that's best for you. Unfortunately Black Swan lv4 has a 0% chance of winning. Make sure you don't use any dragons that have a 0% chance, as you will exhaust them for nothing.

The "highest" chance is a Dark Angel or Unicorn at 60%, but I'm guessing you don't have any of the diamond dragons, which will hurt a lot... The "best" non-diamond chance is Mask at lv10, but that's only a 20% chance and it has to be lv9 or lv10.

There is nothing you can do except to keep trying with dragons that have more than a 0% chance of winning. You may have to try many times, or you may get a lucky roll soon. I spent the past three days trying to beat a lv14 Caesar and finally won with one of my Diamond Dragons (20% chance). I tried so many times that I exhausted a good many dragons, ran out of possible candidates, and had to wait for some dragons to heal...