Efficient Construction and Forensic Gadgeteer trigger, creating a 1/1 Thopter artifact creature token and a Clue token.
Activate Krark-Clan Ironworks by sacrificing the Thopter, adding CC.
Activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top from the battlefield onto the top of your library.
Activate the Clue by paying 1 and sacrificing it, causing you to draw Sensei's Divining Top.