This dragon came about through a complicated process. Combining elements from multiple sources beginning with the head of an eagle. I decided to forego normal horns and instead bring in the antlers of a deer. 

When that proved too simple for the beast, I took it a step further and brought in elements of the elder wand from Harry Potter fame. 

Combining these ancient animals with the power of the ancient wand means this dragon has far greater power than that of a normal dragon.