No Smaug is. Unfortunately he only has showdown. If no one challenges him by the time my 24 hours are up, I am going to challenge him to triples and press the point of challengers choice. No one should be able to dominate a battling game by default because they are great at singles and they only have showdown which does not do triples, doubles etc.
If you want to challenge Smaug to 6v6 on showdown, that would be a big help, but he is tough.