Hail Dragon

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

Breeding a Cold Dragon or cold hybrid dragon to mate with a Lightning Dragon or lightning hybrid dragon can also produce a Storm Dragon.

Earning Rates
Coin per minute: Level 1: 12 / Level 10: 77

Dragon Earning Rates without boosts.

Boost Calculation Guide to use with the page linked above.