Bone Dragon

Breeding
The can be bred by using any two dragons, in either order, containing the Fire and Earth elements 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 's breeding and incubation times of 10 hours is likely a reference to how Halloween occurs during the tenth month of the year.