"It is a place hidden underneath the prison simply called the the Private Vaults," Loki told Thor before coughing. He was lucky that blood did not stain his fist when he removed it from shielding his mouth. "I heard Draco Malfoy reference to it once before." Loki averted his eyes at the mention of the wizard he had killed. "It was before his passing, and I believe we may be able to replicate the powers used to hold the dark Wizards in that prison in order to capture and keep Hela from wreaking further havoc on the universe."