Spoilers below if you haven't played Out of the Abyss.
I am running the D&D 5e adventure Out of the Abyss. There is a section in the campaign where the PCs encounter a device called the Maze Engine. On p. 187-188 of the module, it describes what happens upon activating the engine, but I don't understand it. Can somebody please explain?
On p. 187, it says that
after successfully passing the Intelligence Check to activate the Maze Engine, it takes 12 rounds to align itself and activate its magical effect. This suggests that only one magical effect takes place because the Maze Engine is destroyed on round 13.
However, on p. 188, it says that
you should roll a d100 on each of the Maze Engine's turns to determine what it does. This suggests that a magical effect will take place on each of the 12 rounds before the Maze Engine is destroyed on round 13.
The two don't seem compatible to me and I'm not sure what the correct interpretation is. Can someone please help?
Thanks in advance!