You know, I might be wrong. I thought I had understood the breeding rules correctly, but double checking with the calc, it does show only single type offspring, no hybrids. The same is true for the Zodiac type. I sent a message to the calc's creator asking for clarification since it seems I might have made a mistake!
No problem! TL does change the rules around quite often though lol
Champions cannot be acquired through breeding. You can use them as breeding parents, but it will not result in a champion dragon.
Are you thinking of Prime dragons? Primes can be bred and do require level 15 parents. There are no Primes that are a red-green combo though so breeding Fire & Forest will only give red-green dragons.
That is good info, I for some reason thought the PRIME had a red and green? But now I looked and it doesnt...what a dufous I am being..haha