They mark the Bene Gesserit Bashar Miles Teg and the Duncan Idaho ghola for death, destroying the Gammu Keep in an unsuccessful attempt to kill Idaho, and annihilating the planet Rakis with their Obliterators, killing Teg. Eventually, the core of the Honored Matres is destroyed according to the plan of the Bene Gesserit leader, Mother Superior Darwi Odrade. At the Battle of Junction, the Honored Matre stronghold, both Odrade and Great Honored Matre Logno perish, giving Murbella, a former Honored Matre assimilated into the Bene Gesserit, the chance to ascend to both positions, carrying out the rest of Odrade's plan by unifying the orders. The first sequel to the original "Dune" series finds the Bene Gesserit unified with the Honored Matres into a New Sisterhood. Joining forces to prepare for their mutual Enemy, both factions struggle to coexist in this new form, under Murbella's rule. But renegade Matres still persist; led by Matre Superior Hellica, they still maintain strongholds on captured worlds such as Buzzell, Gammu, and Tleilax. Over the course of twenty years, Murbella leads the Sisterhood against the renegades, culminating in the Battle of Tleilax, where Hellica is killed and the planet is completely destroyed. Upon killing Hellica, Murbella discovers that she is in fact a Face Dancer. With the fall of Tleilax, and the revelation of Face Dancer infiltration, the unbalanced and vindictive breed of Honored Matres is crushed. Murbella soon learns the "missing link" in the origin of the Matres by exploring their past through Other Memory; initially a hybrid group of Bene Gesserit and Fish Speakers, they had developed their violent tendencies with their third addition: awakened Tleilaxu females. The best kept secret of the Tleilaxu — that their famed axlotl tanks are in fact their race's females kept in a vegetative state — had been laid bare before the matriarchal alliance, and their wrath had known no bounds. Attacking every Tleilaxu planet on their way out of the galaxy, the martial prowess of both the Fish Speakers and the Bene Gesserit had ensured their victory. They had managed to liberate a number of the axlotl tanks, and their next task had been to rehabilitate the brain-dead women.