如同陆地上的近亲，这群喜欢栖息在龙谷的蝰属飞龙与欧洲神话中的生物极为相似。 抛开体型差异，蝰属飞龙和其他近亲恐龙的最大区别就是前者只有两条后腿，和鸟类差不多。 除此以外两者很接近，另外它们还有如装甲般厚实的鳞片、坚韧的翅膀并且可以从嘴部的一对腺体中喷射物质。 物质的属性和飞龙鳞片的颜色有直接联系。有些会吐火，有些会喷酸，还有一些甚至会射出生物电柱。
Common name: Wyvern
Species: Draconis vipera
Like its relative from the Island, the Draconis vipera that inhabit the aptly named Dragon Trenches are creatures straight out of European legend. Aside from size, the main difference between Draconis vipera and its larger cousin is that the former possesses only two legs, like an avian. Otherwise, it is quite similar, with armored scales, leathery wings and the ability to spew projectiles from a pair of glands inside its mouth. The nature of these projectiles is tied directly to the color of Draconis' scales. Some spit fire while others unleash poisonous acid or even bursts of bioelectricity.
I can imagine no flying mount more deadly than Draconis vipera. Its strength, toughness and ability rain death upon one's enemies makes it unmatched in combat. The few creatures that it cannot immediately overpower, it can outmaneuver. The ridges on its back form a natural saddle, to the point where many riders prefer to ride Draconis bareback. Curious indeed. However, Draconis vipera is too resilient to domesticate once it has become an adult. It must be raised from an egg if you wish to garner its loyalty.