So you want to know the fastest breeding pair to hatch a Firework Dragon. I bet you are not alone, and luckily we've got you covered. All the details are below.
Breeding Pair: Air + Scorch OR Fire + Sonic
Breeding Time: 6 hours or 4 hours 48 min (with upgrade)
Availability: Fourth of July
Type: Fire, Air
Price: 704 Gems (Cute but no...)
The baby version of this dragon is a huge spazz, making it very worth using the Fountain. I like both versions though - a cool one. An interesting bit of trivia as well that long before the Smoke Dragon (Fire, Air), I thought this dragon might be the only complement to Blazing (Air, Fire).