Some years ago the Eldar were reinforced with a new Corsair army list in the book Doom of Mymeara. The Corsair list also introduced the new Aspect warriors called Shadow Spectres. This new Aspect warriors is according to the legend a symbol of the Eldar god Khaine in his Eternal form, where the spirit of the Pheonix lord Irillyth was awaken to lead the shadow specters into battle once again.
The Shadow specter himself is a jet-pack based warrior with a ranged weapon. Its weapon can be used either to hit hard on vehicles or amored targets or it can fire in a dispersed mode to fight light infantry. It reminds of the prism cannon, but has a very short range and is weaker than the vehicle mounted version. It can however be boosted if another model in the unit gives up his hit to boost a friends weapon.