Breed two rainbow dragons together. At least that's what I've read, I haven't gotten a rainbow dragon yet myself.

Nice work! How do you breed the colour ones?

Yeah I realized that I could rush airships and still make a profit from it a couple of days ago :p

You will probably be fine as long as you don't get a lot of airships requiring huge amounts of food : o

Awesome. I can't wait until I get to where I can just rush the airships and still make profit.

Got this bad boy and a lot of gems by doing airships for an hour!