Jeskai Control has almost no early creatures to remove, so Rottenmouth Viper and Deadly Precision are largely dead cards against their control plan, while Strategic Betrayal (exiling a creature and their graveyard) is mostly for graveyard hate against Jeskai Revelation loops rather than creature removal, so it's a marginal add here. Duress is the priority pickup, stripping their sweepers (Day of Judgment, Inevitable Defeat) or countermagic (No More Lies) before you commit threats. Focus games on applying pressure with your cheap creatures before Great Hall of the Biblioplex and Jeskai Revelation take over the late game, and use Duress to clear the way for your key threats.