Here’s example
Name: hot coins
Design an function: it consists of a giant pit with a gigantic trapdoor as the floor,and 2 shafts leading to the pit. When activated,the shafts will start to pour out coins,heats to around 50 degrees Celsius,at a slow rate at first but slowly began to go quicker. Pulling a lever in the pit will open the trapdoor. The victim falls onto a net but all the coins fall through the holes into a giant furnace below the net. Failing to do so will result in the victim being buried in 50 degrees Celsius and get burned to death.