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.