Flashfreeze is excellent here, since every spell they cast is green. It counters their key green permanents like Mossborn Hydra and Icetill Explorer. Torpor Orb does not belong in this matchup: it only stops abilities that trigger when creatures enter, while their gameplan runs on landfall, which triggers when lands enter, so it would mostly hurt our own Dream Beavers, Floodpits Drowner, and Spyglass Siren. Duress strips Earthbender Ascension or Shared Roots from their hand before they can be cast. Wan Shi Tong, Librarian is a strong flash threat here because they search their library constantly with Shared Roots, Escape Tunnel, Fabled Passage, and Earthbender Ascension, and every search grows him and draws us a card. Spell Snare has few clean targets since most of their key cards cost more than two, and Shoot the Sheriff is the most replaceable of our removal spells, so both come out along with We Say Thee Nay!. Keep removal like Bitter Triumph and Requiting Hex since their early creatures (Llanowar Elves, Sazh's Chocobo) still die to it.

This is the mirror, so proactive disruption and card advantage matter more than reactive counters. Duress strips their removal (Bitter Triumph, Requiting Hex) or countermagic before it matters. Vren, the Relentless is a strong mirror-breaker since it exiles their creatures that die and generates value every turn. We Say Thee Nay! gets cut since it's a soft counterspell that both sides already have plenty of ways to play around, and Shoot the Sheriff struggles against their outlaw-heavy creatures (Spyglass Siren is a Pirate, Azure Beastbinder is a Rogue). Keep Kaito and Enduring Curiosity as they are premium mirror threats.

Duress proactively takes their removal (Requiting Hex, Stir Up Trouble) or Strategic Betrayal before they can use it on our threats. Torpor Orb turns off Biotech Specialist's Lander token creation and The Sackville-Bagginses' sacrifice draw trigger, cutting into their value engine. We Say Thee Nay! is cut since it is too passive against their steady stream of threats. Spell Snare stays in because it has plenty of targets: Biotech Specialist, The Sackville-Bagginses and Lively Dirge all have mana value 2. Preacher of the Schism is a slow deathtouch blocker that doesn't do enough against their proactive sacrifice-based plan. A Spyglass Siren also comes out, since its Map token is created by an enters trigger that Torpor Orb would turn off.