UW Control has almost no creatures worth killing, so removal spells are mostly dead weight; Lightning Axe and Fiery Impulse come out. Mystical Dispute is excellent since nearly their entire deck is blue (Teferi, No More Lies, Memory Deluge) and costs only {U} against it. Supreme Verdict can't be countered, so neither Mystical Dispute nor Disdainful Stroke answers it; plan around it instead. Disdainful Stroke counters Teferi, Hero of Dominaria, and The Wandering Emperor's casting cost is only 4 so it qualifies too. Keep Picklock Prankster and the core card-selection suite since grinding through their removal/counters is still the main plan.