Mono Red Madness wins by chaining red spells, attacking through combat, and burning you out, so Hydroblast and Blue Elemental Blast are premium answers, countering or destroying key pieces like Kessig Flamebreather, Guttersnipe, or any red spell on the stack. Note that Sneaky Snacker is blue-black, so the Blasts can't touch it. Our Fog effects (Moment's Peace, Tangle, Fog) buy turns against creature attacks, but they do nothing against Fireblast, Lightning Bolt and other burn that goes to the face, so lean on the Blasts to remove the damage engines. Weather the Storm isn't a Fog; it just gains life, which helps offset burn, especially when it's copied with storm. Cut slower spells like Preordain and the clunkier Embrace the Paradox/Stream of Thought that don't advance the game plan fast enough against this aggressive clock.

Dimir Control has very little combat damage, so our Fog effects are mostly dead weight here and should come out for proactive tools. Dispel protects our key draw spells (Behold the Multiverse, Plunder the Trollshaws, Arcane Denial) from their Counterspell and Spell Pierce, while Murmuring Mystic generates a steady stream of flying blockers/attackers off our many instants and sorceries to close the game since they have few ways to interact with it. Keep our full counterspell and card draw suite since this is a grindy matchup decided by who runs out of resources first.

Affinity's threats like Kor Skyfisher, Glint Hawk, and Refurbished Familiar are white, black, or colorless, and there are no red cards in their deck, so Hydroblast and Blue Elemental Blast have no legal targets here and stay in the sideboard. No sideboard changes are needed. Since Affinity's clock relies heavily on efficient attackers rather than burn, our Fog effects remain strong at buying time while we assemble card advantage. Their removal, such as Dispatch and Grim Bauble, has very few targets in our creature-light control shell, so the games come down to grinding through their artifact value engine with repeated draw spells. Keep the Fogs in, as their aggressive curve punishes any dead turns.