I never heard anyone saying breeding Blizzard Dragon is hard, although I agree with everyone, it is by far one of the strongest dragon if your starting up, but after your level gets higher you encounter too many Dark Dragons which may be a weakness of the Blizzard Dragon.
I still fight with this dragon and I am on level 36. It's fully trained, three gold stars, and level 19. I think it's pretty powerful but it would be nice if it wasn't so easy to kill especially if you encounter a fire dragon. Dark does to but I see more pure fire or fire hybrids.
very late on this one, but I would use hybrids for battle instead of a flame and terra. I learned early on that they are very weak in comparison. By Blizzard is a level 20 fire breather, fully trained at 3 gold stars.
Its highly prefarable to start off with category 4 dragons as they are more superior than the usual breedable ones. Category 4 dragons fare way better in combats besides having stronger trainable attacks capable of packing a punch especially on other lower category dragons with lower hp. The easiest and fastest way to obtain category 4 dragons is by recruting them from the reqruitment tavern. The unique dragons offered in the tavern are all competent for combat, way better than the usual dragons obtained from breeding especially when you have just started off with the game . These dragons have a decent hp and are certainly useful when you are farming for gems.