Trial of Swirling Fear
Trial of Swirling Fear is one of the Trials of Ascendancy, and is found in The Crypt Level 1. It demonstrates Spinning Blades, which are large traps which follow a set path along the ground and can go around corners, , taking player's energy shield and health quickly when cut by them, enough to kill in roughly one second. The damage does not depend on difficulty, but the layout is harder on higher difficulties.
Upon completing the trial, Izaro gives the message "Shine boldly so that all may find you when the night falls." and you are provided with a portal back to the entrance.