Liberty Dragon

Breeding
The can be bred using two dragons, in either order, that include a Copper Dragon and any dragon that contains the Air element, at the Breeding Cave/Epic Breeding Island.

Earning Rates
Coin per minute:

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.

Possible References

 * The dragon's purchase price of 714 and breeding time and incubation time of 29 hours 49 minutes may refer to the Storming of the Bastille on July 14, 1789, and the celebration of Bastille Day. The 714 gems most likely represents July 14, while the 29 hours 49 minutes (1789 minutes) likely represents the year.
 * Bastille Day is a reference to the French, who gave the U.S the Statue of Liberty as a gift in 1886.
 * The dragon's breeding combination of a Copper Dragon and an Air Dragon is likely a reference to the fact that the Statue of Liberty is made of copper, and its greenish color resulted from the copper oxidizing.