This colorless mirror comes down to who resolves Karn, the Great Creator and The One Ring first and who controls the Trinisphere lock; Hexing Squelcher lets our own Karn, the Great Creator or The One Ring dodge any incidental countermagic they might sideboard in and gives our board ward. Disruptor Flute can name Karn, the Great Creator or Urza's Saga to blunt their tutoring or Construct-making engine. Mycosynth Lattice is a powerful alternate win condition that also lets us use any color of mana freely once it resolves. Crop Rotation and Expedition Map are trimmed since both decks already have reliable Tron-style manabases and we'd rather have impactful spells.