The sister ship of the dread Malevolence, the Devastation was involved in a operation during the clone wars that concerned the Nightsisters of Dathomir. Like the Malevolence, it was armed with two ion cannons, but were powered force crystals. One of it's first mission was to hunt down and take the Republic ship, Sedawan's cargo of lightsaber crystals.
It's first major target was going to be Dathomir but the Nightsister Sai Sircu was betrayed by Count Dooku, but she was able to take control of the ship. Sircu then changed the target to Coruscant. Unfortunately, the jedi were able to send in strike team to destroy the Devastation.