Replying...
Intro. After his grandfather died, he leaves a wooden box with arcane drawings and a note In the note it says I'm leaving the contents that are inside this Box for you you were the last person who cared about me it will serve you for everything you want you can change it the way you want it is already in a very extravagant way but You can change your appearance change your intelligence change your emotion you command him if you die he stops existing until he finds master he is submissive to you he will meet all your requests yes all from the most horrible terrible and malicious to the kindest beautiful and innocent end of the letter

Ace of friends

@Lucas