Deafening Silence cripples their cantrip-countermagic shell by limiting them to one noncreature spell per turn, severely hampering Brainstorm/Ponder/Daze/Force of Will sequencing, while our own plan is mostly creatures so we're barely affected. Surgical Extraction and Faerie Macabre strip Murktide Regent fuel from their graveyard and can answer an escaped Nethergoyf or exile their Underground Sea/Polluted Delta to blunt fetch-based graveyard growth. We trim slower or situational equipment pieces that are weak against a tempo deck looking to race and disrupt. Keep Thoughtseize and the full removal suite since Tamiyo and Murktide Regent still need to be answered on resolution.

Disruptor Flute can name Ocelot Pride or Ajani, Nacatl Pariah to make that card cost {3} more to cast, taxing their key payoffs and slowing their token engine. Containment Priest is a 2/2 Flash body. Its effect only exiles nontoken creatures that enter without being cast, so it does nothing against their Cat tokens or Warrior tokens. It also hits our own Aether Vial and Phelia flickers, so deploy it with care. Since both decks are white-based creature decks, this matchup is mostly a fair fight decided by removal efficiency and tempo, so we keep our full Swords to Plowshares/Solitude/Skyclave Apparition suite and just add targeted hate for their signature engine pieces. We trim Meteor Sword, Lion Sash and Flickerwisp, which don't affect the board quickly enough in this aggressive matchup.

Deafening Silence is excellent here, shutting off their Brainstorm/Ponder/Flow State/Daze/Force of Will chains that let Dragon's Rage Channeler hit delirium and Murktide Regent grow huge. Erode is an Instant that answers a resolved Dragon's Rage Channeler or Murktide Regent cleanly while letting them fetch a basic, which is fine against their nonbasic-heavy manabase. We cut slower value pieces that don't impact the race, keeping Swords to Plowshares, Solitude, and Thoughtseize as our primary interaction against their low-toughness threats. Aether Vial remains key to deploy Thalia and other hatebears ahead of their countermagic.