Metal Dragon

Obtaining
The is the eighth basic dragon in the game. It is available in the market for 1,000,000.

Alternatively, the can be bred by selecting either a  or a Plant Dragon to breed with a Malachite Dragon/Ironwood Dragon, in either order, in the Breeding Cave/Epic Breeding Island.

Earning Rates
Coin per minute:

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the values above.