A Plasma Decimator is a massive, Knight-grade Imperial Plasma Weapon that serves as one of the primary armaments of the Dominus-class Knight Castellan. The Plasma Decimator is a huge and obliterative weapon capable of bathing swathes of the battlefield in searing energies and reducing the enemy to glowing ashes.
Knight Castellan pilots become adept at regulating the flow of plasmic energy from their dual power cores to this potent weapon, even risking angering the Machine Spirits in order to unleash an especially ferocious blast should the situation demand it.
- Codex: Imperial Knights (8th Edition), pg. 68
- Games Workshop Knight Castellan