A Wraithgate is an item of Eldar technology, one of the smallest types of Webway portals which the Eldar use to instantly travel great distances. These portals, portable enough for an Eldar Farseer to carry, can be deployed at any location and open directly into the Webway, allowing for the rapid deployment of forces into the material realm at shocking speeds. Often the troops deployed will be from an orbiting fleet or even their Craftworld of origin. A Wraithgate's only limitation is the size of the unit which may traverse it; some may be large enough to allow a Falcon through, while others are restricted to light vehicles no bigger than a Vyper.
During the 13th Black Crusade Eldrad Ulthran of the Ulthwé Craftworld created a number of elite strike forces who utilized Wraithgates to perform lightning strikes on the enemy. Wraithgates are also standard on the Storm Serpent, an Engine of Vaul which functions as a transport for light Eldar forces.