Mono-Green Landfall ramps into Mossborn Hydra and Mightform Harmonizer, using landfall triggers to double counters and power. Flashfreeze counters their green ramp spells and payoff threats like Mossborn Hydra and Mightform Harmonizer, providing cheap interaction against their curve. Wan Shi Tong punishes their fetch-heavy manabase (Fabled Passage, Escape Tunnel) with card draw and counters. Seam Rip is too narrow against their mostly-bigger threats, and Three Steps Ahead is less impactful against a low-interaction ramp deck that just wants to resolve threats.

Dimir Midrange is full of expensive value engines and removal like Kaito, Bane of Nightmares, Cecil, Dark Knight, and Enduring Curiosity. Disdainful Stroke stops Enduring Curiosity while Negate counters bombs like Kaito and We Say Thee Nay! before they take over the game, while Wan Shi Tong is a huge flying threat that also punishes any fetch effects. Erode is weak since giving them a basic land isn't worth it against cheap threats (and noncreature enchantments need Get Lost/Seam Rip instead), and Pinnacle Starcage whiffs on most of their higher-cost card advantage creatures, so both come out for hard counters.

BRG is a go-wide sacrifice midrange deck with Callous Inspector, Gene Pollinator, and card advantage engines like Obsessive Pursuit and Fanatical Offering. Beza, the Bounding Spring stabilizes life and card advantage against their wide, cheap-creature board. Trim reactive counterspells since they're happy to play into an empty board with cheap threats, keeping Day of Judgment and removal as the primary answers.