Keep using Coral >< Infinity || Infinity >< Coral combos alternately and continuously, so far got:
1. 14 hours - Seafarer.
2. 12 hours - Iridescent.
3. 12 hours - Iridescent.
4. 9 hours - Celestial.
5. 14 hours - Seafarer.
6. 10 hours - Coral -->
Speed-up breeding -->
Beast >< Aether - Coral.
Aether >< Beast - Coral.
Azurite >< Diamond - Coral.
Diamond >< Azurite - Coral.
Back to Coral >< Diamond || Diamond >< Coral combos alternately:
7. 10 hours - Coral.
8. 10 hours - Coral.
9. 22 hours - Wizard.
10. 10 hours - Coral.
Speed-up breeding:
Diamond >< Beast || Beast >< Diamond combos:
1. 10 hours - Coral.
2. 10 hours - Coral.
Infinity >< Beast || Beast >< Infinity combos:
1. 10 hours - Coral.
2. 10 hours - Coral.
Night >< Diamond:
1. 12 hours - Water.
Water >< Magic || Magic >< Water combos:
1. 10 hours - Coral.
2. 23 hours - Night.
3. 10 hours - Coral.
4. 10 hours - Coral.
Why is it so hard to get limited dragon?
I give up... Spent around 299 golds for nothing, but tons of Coral...
Another new lesson for me: No more spending gold to speed-up breeding to try for limited dragons...
Good luck to those still trying and congrats to those who got it.