Those of the blood element are known as the Upir of dragons. They need the consumption of blood to live a healthy life. Blue Blood specifically gives them an energy/magical boost. 

Blood Manipulation - Can manipulate their blood and use it offensively. 

Frenzy - After drinking a blue’s blood, these dragons get an adrenaline rush and feel no pain for the next hour. Their behavior changes and they become more alert of their surroundings. It is difficult to get these dragons under control when in this state. 

Blood Tracker - These dragons have the strongest scent of all the elements and can track individuals from as far as 40 kilometers away.