Beanstalk Control uses Trinisphere and Chalice of the Void adjacent taxation along with Karn, the Great Creator to lock out our spells, so Hexing Squelcher's ability making our spells uncounterable and granting ward to our creatures helps push threats through their control shell. Disruptor Flute can name The One Ring or Karn to tax their key engine pieces by {3}, slowing their grindy game plan. Flusterstorm is less useful since their deck isn't storm-based and rarely overloads the stack with cheap spells in one turn, so we trim it along with a Stock Up for more proactive disruption against their lock pieces.