The Time-Displacement Cylinder is a unique device built into the upper shell of the Anti-Monitor.
It provides the Anti-Monitor with the ability to travel through time. With it, the Anti-Monitor could fulfill its prime objective and travel back to witness the creation of the universe. However, it disregarded that objective. A long time later, Aya targeted the Time-Displacement Cylinder for her goal of destroying all life. She eventually found the Anti-Monitor and ripped its upper shell in half then took the cylinder. She took the cylinder to Maltus and inserted it into the Time-Displacement Generator. A window to the beginning of time was opened. Once Aya returned with Hal Jordan and Razer. The generator and cylinder blew up.