Heroes 5 - Sylvan Creatures: Emerald Dragon - Emerald Dragons are the favored children of Sylanna and, as such, they cannot be harmed by Earth Magic. As with their younger siblings, they can breathe a lethal acid cloud to dissolve their enemies back to the ever-hungry soil. The Emerald Dragon, in direct competition with the Black Dragon for top dog due to the fact that it has almost 50% more initiative, is another fast flier which can tie up enemy shooters, preventing them from attacking Sylvan's own shooters. It is betrayed by its low Hit Points and poor damage range, though. Immunity to Earth is a narrow but nonetheless useful ability to have in reserve