Mono Green Landfall wants to chain lands into Mossborn Hydra, Mightform Harmonizer, Sazh's Chocobo, and Earthbender Ascension triggers, so Tishana's Tidebinder is excellent here. It counters landfall and enters-the-battlefield triggers, and when it counters an ability of a creature like Icetill Explorer, Mossborn Hydra, or Mightform Harmonizer, that creature loses all abilities for as long as Tidebinder stays on the battlefield. Against Earthbender Ascension it can still counter a trigger, but the enchantment itself keeps its abilities. Rest in Peace shuts off Esper Origins flashback and stops Icetill Explorer from replaying sacrificed Fabled Passage and Escape Tunnel from the graveyard, while being fine to board since our own deck isn't graveyard-reliant. Flashfreeze is a clean answer to their green spells (Mossborn Hydra, Icetill Explorer, Earthbender Ascension, Shared Roots, Sapling Nursery) at a great rate. Day of Judgment comes out since their board is full of small, resilient landfall creatures that regrow value and a 4-mana sorcery speed wipe is too slow and symmetrical against a deck that doesn't overextend into our sweepers as much as it grinds with lands. No More Lies and Seam Rip are cut because Seam Rip only reaches their mana value 2 or less permanents (Llanowar Elves, Sazh's Chocobo, Keen-Eyed Curator) and No More Lies is a soft counter that is weak against a deck that ramps with extra lands, compared to the value of proactive hate pieces. Keep Get Lost in as premium interaction against their bigger threats and enchantment engines like Earthbender Ascension and Sapling Nursery.

Dimir's creatures are mostly cheap value bodies like Dream Beavers, Floodpits Drowner, and Spyglass Siren, which have already used their enter triggers by the time a sweeper resolves, so both copies of Day of Judgment come out. Erode and one Petrified Hamlet (only useful vs. Soulstone Sanctuary or Restless Reef) make way too, since removal is better spent on planeswalkers and key threats. Tishana's Tidebinder is excellent here, flashing in to counter Kaito's abilities, Floodpits Drowner's stun trigger, or Enduring Curiosity's recursion, while the affected permanent loses its abilities for as long as Tidebinder remains on the battlefield. Pinnacle Starcage stays in, since it exiles Dream Beavers, Spyglass Siren, Floodpits Drowner, Azure Beastbinder, and their cheap artifact tokens, even though it misses Enduring Curiosity, Kaito, and Preacher of the Schism. Flashfreeze stays in the sideboard, as it only counters red or green spells and Dimir does not cast any. Torpor Orb comes in as one copy to blank Dream Beavers, Floodpits Drowner, and Spyglass Siren triggers, slowing their value engine considerably, but note that it also stops Tishana's Tidebinder's own enter trigger, so sequence the two carefully.

BRG floods the board with cheap creatures and artifact synergies (Gene Pollinator, Greedy Freebooter, Biotech Specialist), so Ultima is excellent as a full reset that also clears their Treasures, Clues, and other artifacts. Pinnacle Starcage exiles their one and two mana creatures like Gene Pollinator and Greedy Freebooter outright, while Torpor Orb shuts off enters-the-battlefield triggers such as Biotech Specialist's Lander token, The Sackville-Bagginses' sacrifice-and-draw, Wolverine's fight, and Rottenmouth Viper's enter trigger. Seam Rip can hit cheap creatures like The Sackville-Bagginses, but it only answers one permanent at a time against a go-wide plan and can't touch Smaug, so it comes out for sweepers; Three Steps Ahead is also cut since countering one threat does little against their go-wide plan. Day of Judgment and Get Lost remain crucial answers to their larger legendary creatures.