Now, the blue fire dragon, i used fire and reindeer, believe me it worked on the first time!
The possible combinations you might get are:
Flower
Poison
Reindeer
Blue fire
if you mess up at getting blue fire, flower only has 1 hour breeding time and poison only has 30 minutes so it isn't all bad if you screw up at getting blue fire, BLUE FIRE HAS A 12 HOUR BREEDING AND INCUBATION TIME, 24 HOURS ALTOGETHER
also, can someone tell me a surefire way to get rainbow and moon dragon, i can only get sun but no moon or rainbow