Talk:Rainbow Dragon/@comment-71.202.254.14-20130221033911/@comment-5670466-20130221034158

http://www.2084.org/dragonvale/breeding-sandbox/

Use the Combo Finder... it will list all possible combos for Rainbow (or any dragon you choose). I used Crystal/Lichen and Mud/Blazing but there are many, many combos that can result in Rainbow. Good luck :D