Sneak and Show wants to resolve Show and Tell or Sneak Attack into Emrakul, the Aeons Torn or Griselbrand. Both spells have no 'can't be countered' text, so Mindbreak Trap can answer them normally. It can be cast for free if the opponent has cast three or more spells in a turn, or hard-cast to exile their key spell before it resolves. Disruptor Flute comes in with flash as a cheap way to name Show and Tell or Sneak Attack. Naming either makes that spell cost {3} more, and naming Sneak Attack also stops its activated ability from being used. Crop Rotation and Expedition Map are cut since our Tron manabase doesn't need extra tutoring against a combo deck that's racing us on resources. Trinisphere stays in, taxing their cheap cantrips and Lotus Petal.