User blog comment:Nmtan/How to get legend dragons/@comment-11292674-20130701194933/@comment-10760902-20130701210527

Yeah, thank you, it works. Every other combinations between rares can give legend dragons. But Gummy 10 and Pirate 10 will give you a low chance. You did success with that, but I would recommend high chance method rather than lucky way.

Why it gives low chance, because 
 * there are 4 elements => much more dragons
 * both level 10 => Rate = 137: not good for legends - dificulty 3

TotalRate = 137 [11 : 6 : 2]