Slappy's Nightmare (Goosebumps Series 2000)

Slappy stared down at amazement at the Dummy stretched out in the crate. There was no mistaking it, the Dummy was his identical twin. "Where'd you get that piece of junk?", he demanded sarcastically. Jimmy O'James carefully picked up the new Dummy and a yellowed stack of papeI found him in a magic store and these instructions tell how to bring this other Dummy to life and how to put you to sleep forever!
GB SERIES 2000 #23