This Valkyrie Destroyer mixes official LEGO pieces with third party compatible venders, and the result is an excellent custom minifigure. The black wings are from a Legends of Chima minifigure, and the legs are by eclipseGrafx.

I really like the brass ammo which comes from a BrickArms minigun. It clips nicely to the black LEGO two barrel pistol, and the silver missiles are a nice touch clipped to the wings.

Overall some nice combinations making a great minifigure!