Ghost Dragon

Breeding
The can be bred by selecting a Cold Dragon or Cold hybrid dragon to mate with an Earth Dragon or Earth hybrid dragon at the Breeding Cave/Epic Breeding Island.

Breeding a Cold Dragon with an Earth Dragon can also result in a Mountain Dragon.

Earning Rates
Coin per minute: Level 1: 6 / Level 10: 38

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.