The gods domain doormat

The doormat has the sentence "Welcome to my domain" written on it. If it's put in front of the front door, the owner of the house or the apartment has total control on anything or anyone inside the property. You also cannot enter or take off the mat without their consent, and if you leave the property without their consent, the changes becomes permanent. In fact, even with consent, they can decide if the changes stays or dissipates, and if you even remember what happened.