Board Thread:General Discussion/@comment-112.198.79.15-20130520020446

How I got it: Crystal Dragon + Petroleum = 15hrs.

Or Water + Hedgehog/Venom Dragon

Dark + Waterfall/Mud Dragon

You can also try these (Although it has a low chance):

Petroleum/Pirate + Mud/Waterfall Carnivore Plant/Rattlesnake + Mud/Waterfall Vampire/Dark Fire + Mud/Waterfall  