Mad Hacker →Used Deck

A type of hand trigger monster that can self-SS from the hand when a monster on the opponent's field is Special Summoned by her.
It does not start working immediately when it enters the field, but by banishing itself during the end phase of each other, you can permanently steal the monster with the lowest power on the opponent's field without targeting it.
In the first turn of the opponent's first attack, there is no fear of being defeated before the effect is activated by battle, and the own SS reacts to monsters that have been Special Summoned to the opponent's field by their own effects, so the token created by Nibiru's effect You won't be able to stop laughing when the move goes through.
However, since I don't really do anything until the end phase, there are many scenes where I can only interfere with one of the strong boards that my opponent has built up until then, and what to do with the monsters that are stolen is basically the opponent's chest. Even if it is impossible, it is possible to remove it by effect, so it will be difficult to always operate it well.
The effect can also be used during your own end phase, so it might be better to put it into play normally and clean up your opponent's field to some extent, then give the one you want.