Talk:Game Updates/@comment-25129101-20131012033052/@comment-5786363-20131012034925

It's easy: Any dragon that has the combination elements in the pool can be bred, even if you're using the same dragons (Iron+Iron can produce anything with Iron and Earth, like Scoria, it may even produce base element Dragons, of that I'm not sure).

The same goes for Epics, any element that goes to breeding the Epic is in the breeding pool - including the Epic Parents used to breed. If you Breed Gold + Bronze you have any combination of Metal, Earth, and Fire in the pool, plus the possibility of another Gold or Bronze.

It's all over this site, and all over Backflips's FAQ for this. The same rule applies, logically, for breeding two Base Dragons: if you only have Air and Air in the pool you can only get Air.