This mirror-ish matchup comes down to who generates more landfall value, so we want the biggest, sturdiest threats we can find. Surrak, Elusive Hunter adds a resilient 4/3 trample threat that can't be countered and draws us a card whenever the opponent targets it with a spell or ability, which punishes targeted answers like Hard-Hitting Question or Meltstrider's Resolve. Torpor Orb stays in the sideboard: it only stops triggers caused by creatures entering, and the opponent's key engines (Icetill Explorer, Mossborn Hydra, Sazh's Chocobo) are landfall triggers caused by lands entering, so ordinary land drops would still trigger all of them. For the same reason, Doorkeeper Thrull's trigger-blanking ability does nothing against their landfall plan, which leaves it as a small 1/2 flier, so it comes out for the more powerful Surrak. Esper Origins stays in as part of our card-advantage and ramp engine. Keep the full core landfall engine intact, since this matchup is fundamentally about maximizing our own land drops and landing bigger threats than the opponent.

Torpor Orb is huge here, shutting off Floodpits Drowner's enter-the-battlefield tap-and-stun, Dream Beavers' drain trigger, Spyglass Siren's Map, and the enter triggers on flash creatures like The Wondrous Wasp and Tishana's Tidebinder. It doesn't hurt our own landfall payoffs, which trigger off lands entering, and Torpor Orb only stops abilities caused by creatures entering. It won't stop Kaito's ninjutsu or Enduring Curiosity's return when it dies, so don't count on it for those. Sheltered by Ghosts removes their best permanent (Kaito, Bane of Nightmares, or Enduring Curiosity) and gives a creature ward 2 against their targeted removal like Bitter Triumph and Requiting Hex. Doorkeeper Thrull duplicates Torpor Orb's effect, so with three Orbs coming in the extra Thrulls are redundant. Esper Origins is a slow value engine that trades poorly into their efficient card advantage and removal suite.

Torpor Orb leaves Gene Pollinator's mana ability unaffected, but it shuts down Biotech Specialist's Lander creation and The Sackville-Bagginses' enter-the-battlefield sacrifice value, slowing their grindy value engine considerably. Surrak, Elusive Hunter can't be countered and tramples over their small creatures like Greedy Freebooter and Biotech Specialist, while punishing targeted removal like Stir Up Trouble with card draw (Requiting Hex can't even target a mana value 3 creature). Doorkeeper Thrull's flash flying body is a defensive brick that doesn't pressure their grindy Jund shell, and Esper Origins is too slow against their proactive sacrifice/removal plan. Keep the Earthbender Ascension and Mightform Harmonizer engine fully intact since landfall speed is how we beat their attrition plan.