Old One Artefact

Old One Artefact is a Gladius stationary artefact unit that increases the damage..

Description
This artefact is clearly of Old One design but, despite that, has no immediate effect—until combat is joined, whereupon a psychic roar shakes the warp and all living races feel themselves driven into a frenzy of bloodlust. Even the soulless Necrons are driven to greater efforts, albeit by the sight of their ancient enemy's designs.