Force of Negation is one of your best tools against Sneak and Show, giving a free counter for Show and Tell or Sneak Attack on their turn without tapping out. Consign to Memory can counter their colorless spells and also stops triggered abilities, which is relevant against Emrakul's cast trigger for an extra turn in rare cases, though its main job is backup interaction. Bilbo and Ponder trim since this matchup is a race to disrupt their combo rather than grinding card advantage, and you need maximum countermagic density on turns one through three. Keep Daze and Force of Will in at full count since tempo-countering their enablers is the core plan.