Wraith

A Necron Wraith

Wraiths are units from the Necron army list, and are serpentine killers. They are, like their more common brothers the Flayed Ones, armed with only their claws, although they are horribly sharp. They also have a tendency to phase in and out of existance, which gives them marked advantages.

Wraiths have the ability to float, bringing death from far 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 greater 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.

Sources

Codex: Necrons (3rd Edition)