Talk:Breeding/@comment-74.65.179.188-20120301030313/@comment-4775325-20120301031012

Pick any combination which has 4 or more different elements in it and when you breed you'll have a very small random chance to get a Rainbow dragon. That's the entirety of it. There is no combination that is more likely to work but combinations which when you fail result in dragons with fast breed/incubate times are considered the best so you can make more attempts for less time/gems. Firefly/Scorch + Seaweed/Swamp is a classic combo for Rainbow with fast breed times (the worst is 9 hrs for Swamp and 5 hrs for Seaweed everything else is 3hrs or less) if you have a Love dragon then Love + Water works the same way.