When talked to, he will assign a mission called The Amulet, in which the Mysterious Amulet can be purchased from him, or Mr. Miz can be punched in the face, after which Brick will shout "I punch him!"
If Mr. Miz is punched, the relic, Mysterious Amulet, cannot be obtained, however, exiting the game and returning to the area will allow players to purchase the amulet.