Following this ordeal, Jonah's powerful psychic abilities would play an instrumental role in rooting out several pockets of Tyranid bioforms left over from the original invasion over the following year. During the Third Aurelian Crusade, Jonah fought against the Chaos-corrupted, Daemonically-ascended Chapter Master, Azariah Kyras, upon the Dead World of Cyrene, and was thought to have been mortally wounded during the final push to Kyras' position. Miraculously, Jonah survived his grievous wounds. Understanding the gravity of Jonah's sacrifices for the Chapter and his undeniable role in their victory against the Arch-Traitor Azariah Kyras, the newly-appointed Chapter Master Gabriel Angelos promoted Jonah to Chief Librarian. Now, it is Jonah's desire to redefine psyker culture within the Blo