I think she meant fireworks not firestorm
btw, you can know what dragon you're getting from the colours available. you're breeding elf which is green/yellow with water (blue) so you'll be getting something that is either green/yellow, green/blue or yellow/blue. In this case, since you got a 20hr breed time, the only possibility is island (green/blue).
https://forums.teamlava.com/showthrea...n-Forms-Stages
this thread has all the dragons and their colours
are u on ios or android? if you're on ios u can get more info on the various dragons from your album. I don't know if there is a thread here stating how much each dragon makes, but generally the more money they make as babies, the more money they'll make in epic form.