Light+Light have 11 hours (23 hours hatch time for Allure). War+War have a failure time of 4 hours due to Thor (17 hour hatch time), Metal+Metal has constant 1 hour failure time (Metal or Double Metal 13 hour hatch time). While this one (Secret Fire+Naughty) since Flame and Terra breed and hatch times are so short its trivial it's the new long but have no failure time, because your hatchery nor the breeding building will never be clogged.Į.g. Last time I found Red Rose+Naughty and it gave Terra, Nature, or Archangel but it was awful because Nature effectively acted as a nuisance for Alliance chests and Item Collections (Runner or Heroic Race) since the breed/hatch is so long but still relatively short (20 minutes/20 minutes) and is ineffective for item collections and wastes ads.(you can run out of ads, very quickly in fact if used too fast).

I posted it because I've been experimenting soooo many breeding combinations (I know there are guides and stuff) But this is by far the best I found

77 hour breeding time dragon city