Note: I am aware that there is a Holder of Sight within the Legion, but everything else I could have titled it was taken as well, and this was the most fitting concept to rebuild the story around (not to mention that I completed writing prior to discovering the list of Legion's Objects). This is a non-canonical tribute to both the Holders Series and the Jadusable saga, and as such I have taken liberties with the rules when there was no other viable option, as well as the canon of the latter to better fit the format and style of the Series.
I also know that there is already an Object 423, but as far as I can recall, there is no number directly pertaining to the ARG that is greater than 538.
The Holder of Sight
In any city, in any country, go to the first university campus you encounter. Once you are inside, casually ask any passing student where you can find the Holder of Sight. The student will look at you in mild annoyance and scribble out a list containing the names of five nearby streets. Say nothing else. Take the list carefully and return to your car. There should be at least one garage sale taking place on each of the first four streets you visit; if even one street does not have a sale, turn around immediately and drive at full speed to the city limits. If you can leave the city quickly enough, you will have escaped successfully. If, on the other hand, you pass a garage sale on each of the four streets, then continue on to the fifth street, where one house will catch your eye. The house should be completely indistinct save for a small table being watched by an old man. Park the car and approach the table at a stroll, but keep your eyes fixed ahead.
The old man will act benevolent towards you, but you will be seized by a feeling of great unease. Do not show that you are uncomfortable. The man is blind in his right eye; look only into his left when you speak to him, for if you so much as glance at his right eye, you are guaranteed never to see the light of day again. Ask him in a casual tone: "Do you have the Object that I seek?" The man will smile politely and spin you a tale of a young boy whose eyes were taken away from him; your sense of unease will grow into abject terror, but maintain your facade. When he has finished, he will turn and walk away into the house.
On the table in front of you, there should be a stack of ink blots, similar to those used in psychological evaluations. You will be unable to resist the temptation to peruse them. The blots should reveal nothing, save for the very last; if you see anything depicted on any of the pages, take the page in your hands and run back to your car. The old man will return from the garage, and you must hide so that you cannot be seen from outside the car. Do not drop the piece of paper that you hold. If the man spots you, then your quest is at an end, and the only thing you can do is pray for your death to be swift and painless. If he cannot see you, he will eventually leave, and you must flee the scene as quickly as possible. Return to the university; once you pass through its doors, you will be safe.
If there is no image to be found in any of the ink blots from the first to the second-to-last, carefully flip to the one at the very bottom. It will appear suspiciously like something that you recognize. The picture is different for everybody; you may see an animal, for instance, or a fictional character, or perhaps an item of food. When you look up, the old man will have returned to the table. In his hand is an unlabeled cartridge for an outdated gaming console, which he will offer to you free of charge.
The cartridge is Object 423 of 538, and within it lies a host of imagery that will drive all but the most worthy Seeker mad.