Never mind the nuanced MTG origins, what actually is Orzhov Sewers in the first place
Target blue players, strip them of counterspells, and create a battlefield where you call the shots
Shu Yun, the Silent Tempest not only grows more powerful with each noncreature spell you cast, but can even share this knowledge of strength with your larger creatures
It is not even limited to actual screws at all
A great example is my Gale, Waterdeep Prodigy/ Raised by Giants deck, where I look to use instant and sorcery pump spells to gain value and take out opponents
It was intended to close the gap between casual and competitive play, fostering an environment where players could play competitively without worrying about participation requirements or ranking issues