Trial of Crippling Grief
Trial of Crippling Grief is one of the Trials of Ascendancy, and is found in The Chamber of Sins Level 2. It demonstrates Sawblades, which run along a set path, 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 "There is a fine line between consideration and hesitation. The former is wisdom, the latter is fear." and you are provided with a portal back to the entrance.