Wraithsight

Wraithlords and Wraithguard alike suffer from a phenomena called Wraithsight, which describes the temporary inactivity of these wraithbone-constructs.

Beeing nothing more but an already deceased eldar warrior put into a construct through the means of a spirit stones, wraithguards and wraithlords percieve the world as an ever-shifting image of spirits that makes them slower to react to changes of any kind, up to the point of total standstill.

Knowing this, the eldar usually send a few seers and/or warlocks with these constructs, as the guidance of a psychically potent mind is very effective at combating the effects of wraithsight. Warlocks that specialize in this are called Spiritseers, and are most common in the ranks of the craftsworld Iyanden.