During the course of their progress from Petitioner into Supplicant, a prospective Dark Knight proves their abilities in a wide variety of areas--expert in the duties of their sect, capable in combat and faith, and understanding the notions of leadership, they are prepared to ensure they can perform the duties of a Knight. Once they have finished all their work and proven their ability, only then, does an Supplicant undergo the Test, the final trial of Knighthood.
The Test is unlike any previous trial the Supplicant has seen. Instead of ensuring they are capable of things, it seeks to ascertain the nature of their character. The Test itself varies for everyone who takes it - their leaders craft a specific test for they and they alone. However, the Test always tries the fundamental nature of its taker. Emotions and commitments are tested, weaknesses are pushed and prodded, and fidelity, loyalty and faith are demonstrated.
While the Test is most often failed by those who forget its actual purpose, it is always difficult, demanding and at times frustrating. What it reveals about the character of an individual can ensure that those who succeed at the task before them nonetheless fail, and those who fall short still prove themselves. The Test should always be undertaken clear of mind and conscience, as distractions can often lead to critical--or even fatal--decisions.
When an Supplicant has passed their Test, they will hold themself in seclusion from any but his leaders until such a time as they are called forth to receive the ceremony of Knighthood on the pedestal in the Hall of Ceremony. This honor will be bestowed by the sect leader, with the Dark Lord or Chancellor serving in that stead if necessary. The Supplicant shall kneel on the pedestal before the assembled Keep, to hear the sponsorship, support and proclamation of their leader and their new peers. Then, as a Dark Knight, they will rise and join the rest of the Knights of the Keep as a comrade and peer for the first time, and be welcomed by them.