The Triad of Entropy

The Triad of Entropy is the collective name for the three deities created by Guul during the First Era. They are:
 * Nox, the Shepherd of Death
 * Caius, the God of War
 * Xyas, the Goddess of Pestilence

The Librum ad Finem claims that these three gods (along with their father) will play a large role in the end of Somara.