This is a mirror-style race where their Voldaren Epicure and Sneaky Snacker are both extremely low toughness. Electrickery with overload wipes their entire early board of 1-toughness creatures for just {1}{R}. Campfire buys crucial life against a deck built to burn out fast, offsetting their reach. Sneaky Snacker and some card selection come out since they don't advance the damage race as directly as answers to their engine pieces or life gain.

Dimir Control is entirely blue-black, so Pyroblast and Red Elemental Blast can counter or destroy their Counterspell, Brainstorm, Lorien Revealed, Spellstutter Sprite, Faerie Seer, and other blue permanents and spells at instant speed. This is one of our best matchups for these cards since nearly every relevant piece of interaction and card advantage they have is blue. Sneaky Snacker and some Highway Robbery are cut since our priority is protecting our burn spells and closing quickly before Snuff Out and their removal suite stabilizes the board. Keep Fireblast and Lightning Bolt as the primary win condition against their removal-heavy plan.

Pyroblast and Red Elemental Blast are premium answers here, countering or destroying Tolarian Terror, Cryptic Serpent, Delver of Secrets, Counterspell, Brainstorm, and any other blue spell or permanent they play. Since the entire opposing deck is mono-blue, these one-mana answers are live against nearly every card they cast. Sneaky Snacker and some Highway Robbery come out since they're slow against a deck trying to counter our spells and race with efficient threats; keep the burn suite intact to close games before their card advantage takes over.