Dimir Midrange is a disruptive, grindy deck packed with Thoughtseize, Fatal Push, Counterspell, and card advantage engines like Psychic Frog and Orcish Bowmasters. Thoughtseize lets you fight over resources proactively and can strip a counterspell before you commit a key threat. Pithing Needle can name Kaito, Bane of Nightmares to shut off its loyalty abilities, or Tamiyo, Inquisitive Student's activated abilities once flipped, slowing their card advantage engines. Blazing Rootwalla and Otherworldly Gaze are too low-impact against a deck full of efficient removal and counterspells, so they are cut for disruption that trades better in this grindy matchup.