UW Control has almost no creatures for your removal to hit, making Culling Ritual and Abrupt Decay largely dead weight against their Teferi, Hero of Dominaria, Supreme Verdict, and counterspell suite. Duress is a cheap way to strip Dovin's Veto, No More Lies, March of Otherworldly Light, Teferi, or Supreme Verdict before you commit Sheoldred or Professor Dellian Fel. It is a noncreature spell, so Dovin's Veto, No More Lies, and Censor can all counter it. Spell Snare cannot, because Duress has mana value 1. Trading a one-mana spell for one of their counters is still a fine exchange. A second Professor Dellian Fel gives you more resilient card advantage and a way to grind through Supreme Verdict, since planeswalkers survive it. Keep Thoughtseize as your primary way to clear the way for threats. Lean on Mutavault and Restless Cottage to beat their sweepers, since they are lands except when animated and so dodge Supreme Verdict. Unholy Annex keeps drawing you cards, but a Demon token from Ritual Chamber will still die to Supreme Verdict.