The black robed figure known as Nazgul stood in the middle of a great stone pit. The pit was a perfect circle with a diameter two hundred yards. The stone walls of the pit were adorned with carvings which appeared to be Mayan in nature.
The walls of the pit stretched upward for one thousand feet, the opening revealing blue sky. A few long vines hung down the walls, the ends just barely touching the floor. The floor was also made of stone, though it was smooth and unremarkable, save for the small quarter inch space which separated it from the wall.
Nazgul waved his hand and the two combatants appeared at opposite ends of the pit.
"Greetings," Nazgul's voice hissed. "Welcome to the pit. One of you will move on, the other will become a blotch of gore on the walls of this pit. And why you may ask?" Nazgul didn't answer as in that moment he vanished and the floor started to rotate.
( I will not jump in on this. Each round of posts, the floor is going to increase in speed. It will become difficult to keep your footing by the fifth round due to centrifugal force. And it will be nigh impossible when you get to the eighth round. The stone walls of the pit are unbreakable and despite the carvings, will be impossible to climb as they do not go to the floor and start about 10 ft above your heads
By a flip of a coin(I used a Canadian penny ), Housemaster has first post
Have fun and good luck!)