Located on the west end of the Daedalus Crossing room in the Clock Tower.

To get past the crashing block trap, you’ll need to slow down time. From the top of the Steps of Time room, use the clock and take the elevator down from the west.

Head west and use smash to break the destructible block below. Quickly run into the room to the west and wait for the first block closest to you drop. When it goes back up, quickly make it west to the chest.