Wraith
Wraiths are serpentine killers of the Necrons. They are like their more common brothers the Flayed Ones, although they only attack in squads of three. They also have a tendency to phase in and out of existence, which gives them marked advantages.
Wraiths have the ability to float, bringing death from above. They move like ghosts and attack with a terrifying fluidity. They have wide, hunched shoulders that support a leering skull of a face. Their arms are long and whip-like with scalpel blades for fingertips. Their ability to phase in and out of existence gives them a great defence against weapons, allowing them to disappear when a bolt or beam of energy comes their way, have it pass through the space they had occupied, and then phase back into reality to continue the killing. This ability, coupled with their ability to float, also helps them to overcome difficult terrain.
Canoptek Wraith
Canoptek Wraiths are the eyes and ears of the central operating systems of any Necron Tomb World. Canoptek Wraiths flit silently through the dusty halls, patrolling for intruders and inspecting systems for damage and decay. Its most notable feature is its dimensional destabilisation matrix - a phase shifter that allows it to skip in and out of reality. While originally designed to allow a Canoptek Wraith to reach into and repair solid machinery, the dimensional destabilisation matrix is no less valuable when dealing with intruders. A Canoptek Wraith can phase its claws and tendrils inside an opponent, swiftly resolidifying them to sever arteries, nerve clusters and other vital pathways without leaving an external mark to show for it.2
Images
A Wraith in Dawn of War: Dark Crusade
Wraiths locked in combat with a Space Marine