This sounds like the title of a Patricia Highsmith mysteryPants said:a fairly promiscuous feat
Faraer said:As has been said, the question is backwards. You develop new mechanics as needed to represent elements in your world. Making up new mechanics to represent nothing in particular would be absurd. What credible world was ever designed around a collage of rules?

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.