Skymaster. I imagine an old Stallion, well traveled, and knowing full well the art of war. Celestia calls on him when things are truly dire, as this Pony is capable of slaying dragons. He is a Pegasus, and while most of his kin treat nature as a business, he has complete control over the sky and the storm. Able to call down lightning and thunder, cast torrential winds and summon the death of winter's cold, he has a power envied by some, feared by others. Unicorns can only dream of such power. ... Sorry, I went overboard. But if you RP, you can have that.