User blog comment:Nmtan/How to get legend dragons/@comment-42.115.10.74-20130701034719/@comment-10760902-20130702033705

Well, that is just words, because I set 0-20% is very low. If you move mouse over it, you can see the actual percent (I designed it for some reason, not to spoil so much with the %)

About the chance, it is indeed highest when you use both rare hybrids level 4, this case it said 6.67% for every legend dragon. If your rare hybrids level is higher, the chance will be changed and lower than 6.67%. Therefore, although 6.67% is low, but it is the highest chance you can have! So make use of that by using both level 4 parents

The legend eggs cost thousands of, do you really want to buy them? If your level under 24, you won't be able to build a habitat for legend (cost 150k ) But you can breed it if you have rare hybrids, we can deal with the habitat issue for it later when you success getting a legend egg. Then if you got one (from breeding mostly) you can put it to the kindergarten and wait until you get level 24

You can check more about legend habitat in here

In game interface, Build->Habitats->Legend->choose the one have this icon  (cost 150k )