Later, Shiva begins to track down those who referred to themselves as Shihan, "Master," or any other title proclaiming mastery of a martial arts form. She would learn what she could from them and, depending on their skill and personal whim, kill them when they were of no further use to her. In further pursuit of her art, Shiva tracks the defeats of martial arts masters, in order to discover new techniques. In this way, she develops an interest in the defeat of Koroshi, master of the art of empty-handed fighting. Gaining no information from Koroshi himself, she begins to search for King Snake, the man rumored to have defeated him. During her search, she meets Tim Drake, who is fighting King Snake's criminal organization, the Ghost Dragons, as part of his training to become the third Robin. Shiva sees potential in Drake, and takes him on as a student. As a bonus, she offers to train him in one weapon, and he chooses the bo staff. Shiva derisively mentions that it is not a lethal weapon, and Drake explains that was the reason he had chosen it. At the end of his training, he defeats Shiva in a sparring match with the bo, and she gives him a collapsible bo staff. Eventually, they discover that the Ghost Dragons are creating a virulent plague. Robin, Shiva, and ally Clyde Rawlins attempt to stop them from releasing it, but the Dragons escape with a few canisters. After tracking them to Hong Kong, they eventually defeat King Snake, though Rawlins dies in the attempt and Shiva mostly witnesses the proceedings. While King Snake hangs precariously on the ledge of a building, Shiva orders Robin to kill him to signify his "graduation" and become her "weapon." Robin refuses and leaves. Shiva then throws King Snake off the ledge herself, though he survives the fall. After Bane breaks Batman's back, Batman seeks training from Shiva to help him regain his skills and fighting spirit (see ""). Though she deems him unworthy of her efforts, she devises a training regimen, out of respect for what he had been before his injuries. As part of this training, Shiva kills the Armless Master, a sensei notable for training Catwoman, while wearing a tengu mask, making sure that his death was both witnessed and relayed to his best students. Shiva then makes Batman wear the mask while performing training missions. He is then ambushed by the master's students, who mistake him for the "Tengu Mask warrior."