I just got done with the tournament, I didn't keep track of all the dragons I used but my Diamond 15 got through rounds 1-14. It took me awhile to take down Inquisitor like some of y'all but Praetorian 10 worked, it also worked on Aquarknight. I struggled with Immortal the most, but Big Bad 10 took it down, I was just randomly choosing dragons by that point lol