Bant Control grinds with card advantage engines like Up the Beanstalk and Quantum Riddler backed by Force of Will and its own Force of Negation, plus hard removal in Swords to Plowshares, Solitude, and Leyline Binding, so a second set of Force of Negation helps us fight through their countermagic and stop key noncreature spells like Up the Beanstalk or Leyline Binding before they resolve. Barrowgoyf dodges their white removal somewhat better than our artifacts since it isn't a permanent type they're built to answer efficiently, and it grows large as both graveyards fill. Sink into Stupor and an extra Giant's Boulder are too low-impact against a deck built around resilient card advantage and efficient removal, and trimming one Expedition Map keeps our curve tighter for a long grindy game.