Those few examples of Relic Leviathan Dreadnoughts which survive into the 41st Millennium are ancient and terrible relics, rarely spoken of and rarely deployed, dreaded as much as they are revered by those Chapters in whose armoury vaults they reside and stand empty until direst need. The tormented and ravaged minds of those interred within are driven to the edge of madness by the little-understood mechanisms unique to the Leviathan, trapped in gore-soaked dreams of the lost Age of Darkness which haunt the machines themselves, and soon suffer a final dissolution owing to the terrible strain the Leviathan inflicts on those who would dare to master it. Only the full authority of a Master of the Chapter is sufficient to unleash these terrifying machines in war, as where they strike and what t