- Exudes Synapse and Toxic Miasma. - Begins the process of consuming the whole planet. - While present, the following effects are always active: - All bio-structures heal from orbital landing at twice the normal rate. - Greatly increases Influence generation rate. - All nearby Tyranids' abilities recharge faster. - Exudes an aura of despair/morale loss for enemies, over a massive area. - Best placed near the middle of the map. - Maintaining this structure requires great amounts of Biomass. Tyranid Requisition production is reduced by 10%.