Dimir Midrange relies on Kaito, Bane of Nightmares and Requiting Hex plus efficient removal; Duress pre-emptively takes away their removal, Kaito, or a counterspell before it generates value, though it can't take their creatures such as Enduring Curiosity. Ghost Vacuum can exile cards from their graveyard, including a dead Enduring Curiosity before it comes back, and it denies any other graveyard value. Seam Rip and Erode are weaker here since Kaito dodges mana value 2 or less, and Erode hands them a basic land that ramps their deck; cut both. Our lifegain core remains the best way to out-value their incremental card advantage.

BRG grinds with incremental value creatures and removal like Requiting Hex and Stir Up Trouble; Duress proactively strips that removal before it can answer our threats. Decorum Dissertation refuels us in a long grindy game where both decks accrue card advantage. Seam Rip stays in: it exiles any nonland permanent with mana value 2 or less, which covers most of their deck, including Gene Pollinator, Greedy Freebooter, Biotech Specialist, The Sackville-Bagginses, Callous Inspector, Umbral Collar Zealot and Obsessive Pursuit. Erode is trimmed since it hands their explosive mana-hungry deck a basic land when it kills a creature. Liliana the Faultless is also trimmed: she is a 1/1 that dies to their cheap removal, and her hexproof ability costs us a discarded card in a grindy matchup. Keep the rest of our lifegain core intact as our primary path to grinding past their card advantage.

Dimir Excruciator is a disruptive midrange/control deck relying on Duress, Bitter Triumph, and Doomsday Excruciator; our own Duress strips their discard or removal before they can use it on our key threats like Amalia. Ghost Vacuum denies any graveyard value and can exile a card to blunt their plans, while also being a cheap artifact that dodges their removal suite. Seam Rip and Erode are weaker since Doomsday Excruciator and Superior Spider-Man exceed mana value 2, and Erode ramping their already land-heavy deck is unattractive, so we trim both. Keep our full lifegain core intact since grinding through their removal-heavy shell is our best path to winning.