Enmity of Ages

The Enmity of Ages was a description of the never-ending struggle between good and evil from the Ancient Prophesies of Gallifrey. Rassilon believed this was personified by the endless fighting between the Doctor and the Master. (PROSE: Doctor Who: The Encyclopedia ^[+]Loading...["Doctor Who: The Encyclopedia (2011 reference book)"], TV: The End of Time ^[+]Loading...["The End of Time (TV story)"])