This oddly shaped wand is about 12 inches long, and but instead of tapering off to a point, this one is cylindrical, with a hollowed out concave surface on one end, and a round knob on the other end, which can be rotated in both directions. There is a button about 1/3 of the way from the knob end to the concave end.
Firstly, pressing the button causes a shaft of nearly invisible, blue-white energy to spring forth from its tip. This shaft of energy extends 4 feet, and seems to act like a blade of incredible sharpness. Three whacks slices through a 4-inch diameter log, and the energy blade even saws through rock and steel, although the process here is much slower, of course. It can be wielded with either one hand or two if using it as a sword. After 10 minutes, or when the button is pressed again, the energy blade recedes into the wand.
Rotating the knob at the base clockwise creates an almost invisible barrier which is virtually impenetrable. It is immobile, and no spell short of Disintegrate will affect it. Likewise, the barrier is not affected by blows, missiles, cold, heat, electricity, or any similar things. Spells or breath weapons (or air) will not pass through it in either direction.
The orientation of the wand while the knob is turned determines the shape of the barrier. Holding the wand horizontally creates a straight wall 8 feet high and 25 feet long.
Holding the wand vertically with the knob down creates a cylindrical wall 8 feet high and 8 feet in diameter.
Holding the wand vertically with the knob up creates a hemisphere 11 feet in diameter.
The barrier thus created lasts for 20 minutes.
It seems that rotating the knob counter-clockwise should also have an effect, but exactly what that is has not yet been determined.