Quake Dragon

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

Breeding an Earth Dragon with a Lightning Dragon can also result in a Crystal Dragon.

Earning Rate
Coin per minute: Level 1: 9 / Level 10: 59

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.