BRG grinds with efficient creatures, Treasure/sacrifice value, and removal like Deadly Precision, so Duress is too slow against a proactive deck and stays home. Deep-Cavern Bat trades with their one-toughness creatures, gains lifelink value, and previews/strips a key spell like Deadly Precision or Witherbloom Charm from their hand. Elegy Acolyte's 4/4 lifelink body blocks well against Umbral Collar Zealot and The Sackville-Bagginses while refilling your hand once you connect. Dissection Practice's marginal -1/-1 rarely kills their bigger threats and the 1-life swing does little in a grindy matchup, while Sunset Saboteur's ability to hand them a +1/+1 counter is actively bad against a creature-heavy deck, so both come out.

Izzet Spellementals wants to chain cheap cantrips and land Hearth Elemental or Eddymurk Crab at a discount, so Duress proactively strips a key piece like Prismari Charm or Traumatic Critique before it can disrupt your board. Ghost Vacuum exiles cards from their graveyard, slowing the cost reduction on Hearth Elemental and Eddymurk Crab while also denying value from their own Ghost Vacuum. Dark Knight's Greatsword is too slow and clunky when the opponent has cheap bounce and removal like Prismari Charm and Burst Lightning to blow you out on the equip. Desolation Prowler's life-payment pump is risky against a deck that can flip Traumatic Critique or Burst Lightning at your face, so it comes out for the more proactive disruption.

Mono-Green Landfall goes wide with small landfall triggers and ramps into bigger threats, so Elegy Acolyte's 4/4 lifelink body stabilizes the race and turns on card draw once we start connecting. Ghost Vacuum can exile their Escape Tunnel or Fabled Passage from the graveyard once sacrificed, though its main value here is flexible graveyard hate against Icetill Explorer's replay plan. Dissection Practice's marginal pump/shrink is too small against their wide board, and Dark Knight's Greatsword is a slow investment in a matchup we want to win on pure card quality and life totals.