The warskin of the Sphinx is actully power armor that amplifies his power. Equipped with six (6) funnels that can channel his psionic powers and are also equipped with plasma cannons.
The Ws of the Sphinx is for al practical purpose an amplifier. Being the Sphinx is a psion the WS amplifies his abilities to unmeasureable levels. The WS is equipped with six psi-funnels that contain a beam generator and a psi channeler that allows him to add his power to the beam energy. he also carries the sword known as the Shard of Ra, it is believed to have be forged by Ra himself and bonded to Sphinx's very genetic make-up. The Shard can emmitt a power beam of psionic energy and can be controlled through the Sphinx's thoughts.
Overlord trooper depicted for scale.