Item: Hat of Controlling Floors, an oversized soft top-hat owned originally by the wizard Jamiroquai; grants the wearer the ability to control the floor of whatever room they are in, sliding it around as depicted in the gifs. Objects in the room slide around, colliding with creatures (friend and foe) dealing 2d4 Bludgeon damage, plus the ability to throw everyone in the room off-balance at will. Does not work on natural terrain.

Encounter: Fever Dragon; an unsuccessful attempt at crossing a Dragon and a Human, creating a creature with the worst of both species and a breath weapon that consists of a damp warm cough that induces fevers, malaise, and body aches.