A bit of Labyrinth inspired this, a new card for the fundamental laws deck, no. 17. It's not as unusual a concept as some of the others in there, but could still get pretty weird.
It's left up to the players to decide how weird exactly, and which approach to dimensions to go with. For anyone wanting to go off on a tangent in more general terms too, have a browse of the whole deck for ideas. Most of what you need to know to use it is here.