Rainbow dragon is random, but I do have a theory on how you can maximize your chance of getting one with the right hybrid dragon combination. Please note that I myself have not tried to breed one though (will save it for last).
Rainbow dragon is created when elements which are not supposed to mix get mixed by chance through a breeding of hybrids dragons.
First, we need to know that some elements are opposite to each other, and we can't breed them normally at the love cave. Below is the list of opposite elements
fire and cold water and lightning earth and air plant and cold plant and lightning (these elements are not opposite, but there's no known hybrids with these combos)
Everytime we try to breed (mix) two hybrid dragons, we have a chance to mix those opposite elements above, and rainbow dragon is created.
So let's take a popular example of hybrid dragon combinations which creates rainbow dragon that is found online: Seaweed and firefly. To analyze our chance of getting a rainbow dragon, we need to look at the elements that make up these two hybrid dragons:
Seaweed = Water and Plant Firefly = Fire and Lightning
When we breed these two hybrids together, below is the possible combinations that we can get from the breeding of these 4 elements (mixing these 4 elements):
1. Water and Plant = Seaweed 2. Fire and Lightning = Firefly 3. Water and Fire = Air dragon 4. Water and lightning = Rainbow dragon 5. Plant and fire = Flower dragon 6. Plant and lightning = Rainbow dragon
Chance to get rainbow dragon = 2 out of 6 or 33.3%
If you have a hybrid pair that gives a better chance than 33.3%, then the pair is more likely to create a rainbow dragon. I have an idea in my mind for a better hybrids, I just haven't verified it yet whether the combo is really working. My idea is
Flower = Fire and Plant Storm = Lightning and Cold
Mixing these 4 elements result in possibly:
1. Fire and Plant = Flower 2. Lightning and Cold = Storm 3. Fire and lightning = Firefly 4. Fire and cold = Rainbow 5. Plant and lightning = Rainbow 6. Plant and cold = Rainbow
My theory is that this pair gives you a chance of 3 out of 3 (50%) to get rainbow dragon, which is better than seaweed and firefly. Of course I can be wrong, feel free to try and let me know =)
I must say that is an intriguing theory! But alas, I am but level 12. Gonna breed rainbow dragon last as well. I'll be sure to test it out and post results, thanks for sharing! --- *insert witty comment*
@eddie1123, you are right. Fire and cold do not mix directly, that's why people usually breed fire with a cold hybrid (such as Ice) to create blue fire. So yeah flower and storm is indeed also 33.3% chance. Let me think if there's a better hybrid.
Even though the odds are that huge this might be a good theory but so far im not getting results i've been breeding Flower Dragon with The Ice+Lightning(I forgot the name) and odds are i kept getting either the ice+lightning or the flower but im still determined to keep trying who knows it might work
I have a feeling that getting the rainbow dragon is like 1% chance or some low percentage from ALL dragon breeding attempts, rather than different chances from different dragon breeds. --- To Enjoy is to Excel