Lava Dragon

Breeding
The can be bred by selecting a fire dragon to mate with an earth dragon at the breeding cave/island.

In the weeks preceding Halloween, breeding a fire dragon with an earth dragon can also result in a Bone Dragon.

Earning Rate
Coin per minute:  Level 1:5 / Level 10: 32

Dragon Earning Rates without boosts

Boost Calculation Guide to use with the page linked above