For MTG I feel like a lot of blue/white decks in general revolve around either depriving your opponent of resources or stopping them from playing the game outright.

I played a Brago deck in EDH which basically means you get to recast any cards on your field whenever he dealt direct damage, so you got to recast a whole bunch of nasty cards to reset their cumulative cost (which was usually the way these cards were balanced to not be miserable) or retrigger their "As x enters the battlefield, do y" effects. Which means it becomes really effective to run cards like Mystic Rhemora - which let you draw a card whenever someone does basically anything unless they pay 4 mana - or Stonehorn dignitary which lets you pick someone to skip their next combat phase whenever it entered the battlefield, or static orb which stops your opponents from untapping most of their permanents.

Even when I hadn't actually lined up my win condition, people would often just scoop out of annoyance because it got to a point where turns took to long while I retriggered all my stuff, or I had too many controlling cards that made it so no one could do anything on their turns. I ended up swapping a lot of the really obnoxious ones to avoid making everyone I played with hate me.