Corruption is the entropical and evil force and state that now pervades Terrafirma. It is aetherical in nature, but can manifest itself mirrophysically. It takes on many forms and can control most finite beings and their natures. It originated in the Mirror Universe from Resifel and he took it to the Paradise of Eydan on Terrafirma to be manifested in the first Mirrorsouls, Adaummim and Evinesce.