Anodyne Spirit (Earth-2042)

"My Dreadnought, the vessel that has so long been the focus of our worship, now rests on its true pedestal. Even now, its engines spark greater ones below, relics long without power, yet ready to fulfill their divine purpose. Stand fast! Keep our enemies at bay! Soon, my brothers, we will all have our reward!"

- Prophet of Truth to his troops during the Battle for Onderon

The Anodyne Spirit, known to the Confederacy of Independent Systems as the Forerunner Dreadnought or simply the Dreadnought, was a Forerunner keyship originally discovered by the San'Shyuum on their homeworld, Janjur Qom.

As a keyship, the Anodyne Spirit was part of the Forerunner strategy against the Flood, as one of the only vessels capable of activating slipspace portals to reach the Ark. Following the Halos' firing, the Anodyne Spirit was commandeered by an aspect of the imprisoned Mendicant Bias and crashed on the San'Shyuum homeworld. There it would later be found and used by the San'Shyuum, and would later become an integral part of the Covenant religion as the centerpiece and main power source for the Covenant holy city, High Charity. Featuring a power generation capacity and shielding unparalleled by any modern-day technology, the ship was used by the San'Shyuum Reformists during the War of Beginnings to dominate their Sangheili foes in naval combat, and later as the flagship of the High Prophet of Truth in the final battles of the Clone Wars.

Source

 * https://www.halopedia.org/Anodyne_Spirit