Dimir Midrange leans on Enduring Curiosity for card draw and Kaito, Bane of Nightmares as a recursive threat, so Rest in Peace exiles their graveyard, denying Enduring Curiosity's self-recursion and any Strategic Betrayal follow-up value. Chainsaw deals with their small early creatures like Dream Beavers or Spyglass Siren on arrival and scales into a real clock. Doc Ock's Tentacles and Basilisk Collar are too clunky against a deck with efficient removal like Bitter Triumph and Requiting Hex, and Raubahn's ward is less relevant here since they can still remove your other threats freely. Apply pressure early since Dimir wants to grind with Kaito's card selection and removal suite.