Talk:Eggs/@comment-68.33.170.167-20121028213407/@comment-5399816-20121029072734

The rainbow dragon is already available at Level 11. Try the sandbox for the suggested combo or any combo that involves 4 elements. There is no 'best' combo, but the trick is to avoid elements that may result in long failure times (e.g. earth and metal, in most cases). You may also refer to this page: http://dragonvale.wikia.com/wiki/Epic_Dragon_Breeding_Charts

Good luck!