After the main event of Extreme Rules, the special guest referee raised the hand of the winner, Matt Riddle. He had just defeated Seth "Freakin" Rollins in a Fight Pit match, blowing off their extremely personal and lengthy feud.
The lights went out, and the crowd began using their cellphones as light, harkening back to the Wyatt Family days. A voice began singing "he's got the whole world in his hands" as the camera panned to various figures in the audience.
Each figure represented a character from Wyatt's past. Mercy The Buzzard, Rambling Rabbit, etc. Eventually, the camera panned to a burned Fiend mask on the commentary desk. And someone wearing a Fiend mask was shown in the crowd.
A video popped up on the titantron as the Firefly Funhouse song played distortedly. A man in a white mask came on the screen asking "who killed the world?" The man said "you did" before the screen cut to black.
A doorway appeared at the top of the entrance ramp. The same masked man from earlier walked out, carrying a lantern. The man took the mask off, revealing himself as Wyatt and blowing out the light on the lantern as the show ended.