When a particularly stubborn foe has provoked the displeasure of a Necron Overlord, he will summon forth an Annihilation Nexus, so the enemy might be suitably punished for their folly. The reality-rending blast from a Doomsday Ark will obliterate most enemies, while its flanks are guarded by the twin Annihilation Barges.
The Annihilation Nexus web bundle contains 2 Annihilation Barges and 1 Doomsday Ark.