Because he coveted the legendary object, Adrian from Durmstrang took advantage of the Triwizard Tournament to sneak into the tomb of the greatest wizard. When he was about to succeed, something unexpected happened. When he woke up again, he was already in a different time and space, accompanied by a Gryffindor who could no longer be useless.
Here, the conquerors behind the veil exchanged contracts with the gods and enslaved all living beings.
Here, if the magician does not become a minion, he can only become a prey.
In a desperate situation, the two met the little wizards who had fallen here from time and space. In order to return to their respective paths, they decided to participate in the life-and-death contest agreed between the conqueror and the gods - the winner would get the opportunity to make any wish to the gods.
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The story of wizards (lords) and other magicians (sorcerers) from all generations in the HP world travel to an independent world to start a magic battle royale (or is it more suitable to call it the Hunger Games?). The world structure is a fusion of the moon and the Hunger Games (what is that?)
In short, there are many styles of wishing machines, and there is always one that suits you.
There are actually no original characters, they just didn't know who they were at first.