Though I never much thought about it, if my fursona were to have some sort of power or ability it would be the elemental bending of sand and water, like in Avatar. x3
Magick as in Witchcraft. But since I use that in real life, the answer may be invalid. Heh. But my mundane self is a Witch, and so is my furry self. ^^
I am the sandy, skittering, shadow of death. I come in a small poof of sand that gets in your shoe, and I leave in a bigger poof of blinding sand when I skitter away. Fear my sand. It will get in your machines and squeak.