This is during Halloween, by visiting all hotels in Azeroth (only in this camp and neutral cities), you can get a bag of candy every time you visit a hotel, open the candy and get a wand mask at random, and so on, and the boss will fall off during the holiday. If you want, you have to wait until Halloween to open the door. Or try your luck at the auction house. Some businessmen will hoard goods and sell them without picking them up.