The shifting chambers of the Blackstone Fortress rebuild themselves over and over, and ancient defence systems awaken, making navigating the mysterious structure more hazardous than ever. Doom hangs over Precipice, and if anyone is to warn the galaxy about the rising threat of the fortress, each of the survivors will have to confront their destiny. Are your explorers ready for their final quest into the Blackstone Fortress? Continuing from the events in Deadly Alliance, The Seethe is now getting more powerful and threatens Precipice itself. This expansion includes two new hostiles in the form of Guardian Drones and a new "rolling road" mechanic that sees you explore the Blackstone Fortress as never before. If you can complete the quest, there is a whole host of bonus secret content to explore. Also included are rules for using Guardian Drones in games of Warhammer 40,000. This set includes: 2 Guardian Drones 16-page Edge of the Abyss booklet 15 Exploration Cards 5 Encounter Cards 36 Fragment Cards 2 Resource Cards 2 Stronghold Artefact Cards 2 Hostile Reference Cards 11 Board Tiles 55 Counters and Markers Assembly Guide Repository envelope (containing your prize for completing the quest) Bonus secret material You will need a copy of Warhammer Quest: Blackstone Fortress and Warhammer Quest: Blackstone Fortress – Escalation to use the contents of this set. —description from the publisher