This article or section contains information derived from Co-op Missions, and should not be considered part of the official StarCraft storyline.
The xel'naga void array is a variant of the warp prism enhanced by xel'naga technology. They can utilize the Void to transport units between points in space. In an alternate timeline where Zeratul survived the opening stages of the End War, the dark prelate deployed them against Amon's Forces to help transport his forces.
The xel'naga void array is available to Zeratul in Co-op Missions. They spawn two at a time from the constructs facility. The two void arrays can then transport units between them, even in phasing mode. When upgraded, void arrays can increase their capacity to be unlimited, and to regenerate the shields of units around them.