The war prism is available to Alarak in Co-op Missions, built from the robotics facility. It can attack both ground and air units, and transforms faster and projects a larger power field than the normal warp prism available in multiplayer games. While in phasing mode it is unable to attack. The war prism is notably Alarak's sole air unit outside his Death Fleet calldown.
Upon being destroyed, war prisms drop their cargo. When in phase mode, war prisms can be the target of the Structure Overcharge ability.
Phase Mode/Transport Mode
The warp prism can transform to project a power field. This power field powers protoss structures and allows warping of units. The warp prism is immobile in phasing mode.
If a warp prism deploys at the edge of an elevated platform, the pylon matrix will extend to lower elevations, but not higher elevations.