Board Thread:Newbie Questions/@comment-25726447-20141119231123/@comment-24568135-20141120140250

Space Dragon is your only Category 5 dragon that I see unless I missed something.

At category 4 you have Elements Dragon, Deus Pet Dragon, Juggler Dragon, Hearts Queen Dragon, Gummy Dragon, and Cool Fire Dragon.

Space can be the strongest one that you have along with 2 of the other group there. To get them stronger you have to win individual fights within a combat, tournament or challenge. Fight to get as many dragons to 3 gold stars as you can. So far I have 8 dragons at 3 Gold Stars.