Dumbledore wanted to invite others into the Misty Illusory Realm to confuse Herpo, Voldemort, and the others who were using the Heavenly Eye to keep watch, and that meant Vizet had to be involved.
But when it came to studying and living his life, Vizet had no intention of compromising at all.
To avoid disrupting his normal studies and daily routine while still allowing others to explore the Misty Illusory Realm safely, he combined it with the goblins' Magic Contract and created a stack of special magical parchment.
The method for signing this Magic Contract was very simple: one only needed to write one's name on the parchment, make a thumbprint with a drop of fresh blood, and then symbolically pay one Bronze Knut as the price.
No matter who it was, as long as the signer signed the Magic Contract, they could safely enter the Misty Illusory Realm without Vizet present, without worrying about being devoured by that pulling force.
The principle behind this magical parchment was, to Vizet, not particularly complicated. It was mainly a small application of "bestowing" and "extension."
And his inspiration came from the Magical Connections he himself had established with countless lives through a method similar to a Life Debt.
Through this special kind of Magical Connection, he could serve as the Weight representing "life," offsetting the "imbalance" brought by the Deathly Hallows.
After figuring this out, he referred to this method of connection and "lent" this unique quality of his to those who needed it.
As for the exact operating principle of this parchment, it also incorporated two magical traits of Sympathetic Magic: "contagion" and "similarity."
So-called "contagion" meant that things that had once come into contact would continue to influence each other.
When Vizet made the parchment, he borrowed from the principle