Talk:Battle Arena/@comment-24299118-20140105022609/@comment-4830404-20140105073548

Check the Battle Arena Calculator. Depending on level, certain dragons like Diamond, Infinity, Passion, and Metal may have higher chances. But if the level is really high like the level 20 dragons in the tournament, it doesn't matter if you use a level 1 Aurora or something.

Sometimes they re-release old tournament dragons, but not as tournament prizes... Your best chance is to get them during the tournament, because if they're brought back, you can only buy them with Gold (and those prices are insane).

Not sure about the different parts like Leviathan Pearls and so on. I'd guess that if they brought back those dragons, you'd have to buy them with Gold too, but I dunno.