Dimir Control has no red cards and no real artifact spells to target, so Hydroblast, Blue Elemental Blast, and the artifact-hate pieces in our sideboard are all dead. Murmuring Mystic and Faerie Macabre don't address their counterspell/removal plan meaningfully better than our maindeck already does, and Dispel is a marginal upgrade not worth disrupting our core shell for. Our maindeck Fogs and card draw already grind well against a deck that wants long games via the monarch, and Arcane Denial is excellent against their own Counterspell and removal suite. This is a matchup where our 75 is already well-positioned, so we keep the list as is.