Trial of Piercing Truth
Trial of Piercing Truth is one of the Trials of Ascendancy, and is found in The Lower Prison. It demonstrates Spike Traps, which shoot out of the ground in a square area according to a timer, taking 1/4 of the player's effective hitpoints (hitpoints + energy shield) and locking him in place. This kind of trap isn't very dangerous, because it cannot kill fast and the lost hitpoints can be recovered using potions.
Upon completing the trial, Izaro gives the message "Belief is the strongest metal of them all." and players are provided with a portal back to the entrance.