Sneak and Show is a combo deck using Show and Tell and Sneak Attack to cheat out Atraxa, Grand Unifier, Emrakul, the Aeons Torn, or Griselbrand, so free interaction is paramount. Force of Negation can be cast for free on their turn to counter Show and Tell or Sneak Attack before the payoff ever hits the battlefield, which is the most efficient way to stop their plan. Consign to Memory is there specifically because Emrakul, the Aeons Torn can't be countered as a spell, but it still has to resolve as a creature and its triggered ability (taking an extra turn) can be countered by Consign to Memory's triggered-ability clause, buying crucial time. Mockingbird and Wail of the Forgotten are cut since this matchup demands maximum proactive disruption rather than grindy value, and we keep Daze/Force of Will at full count as our primary way to interact with their enablers.