Torpor Orb is a powerful hate piece that shuts off Eddymurk Crab's enter-the-battlefield tap ability and Hearth Elemental's cost-reduction shell doesn't care, but it does stop their creature ETB value across the board, slowing their tempo plan significantly. Surrak, Elusive Hunter can't be countered, which is relevant against Get Out's counter mode, and it punishes them for targeting it with removal or bounce like Prismari Charm with a card draw (note that Get Out's bounce mode can only target their own permanents). Hollowmurk Siege is too slow against a deck that wants to chain cheap spells and race, and Shoot the Sheriff is a clunky 2-mana answer to their creatures when we'd rather be proactive, so both get trimmed for more impactful sideboard cards.

Duress proactively strips their countermagic (Spell Pierce, Spell Snare, We Say Thee Nay!) or removal (Bitter Triumph, Requiting Hex) before they can use it reactively, which is huge against a control-leaning midrange deck. Surrak, Elusive Hunter can't be countered, dodging their dense counterspell suite, and its trample plus card draw when targeted punishes their removal-heavy plan. Hollowmurk Siege is a slower value engine that doesn't affect the board and can be picked off by their many answers, so it comes out in favor of more resilient, proactive threats. Head of the Hunt is fine but less necessary against a deck without an overwhelming go-wide plan, so we trim a couple copies for the Surrak upgrade.

Torpor Orb is excellent against this ETB-value deck, shutting off Haliya's life gain trigger and Nurturing Pixie's bounce (though Sage of the Skies' copy trigger is on-cast rather than ETB, its flying/lifelink still matters), and generally slowing their incremental value engine. Heritage Reclamation hits Springleaf Drum or answers any enchantment-based engine they bring in; its main value here is flexible artifact/enchantment removal. Hollowmurk Siege is too slow against a tempo-oriented flyers deck, and Shoot the Sheriff misses outlaws like Nurturing Pixie despite hitting non-outlaw flyers like Momo and Starfield Shepherd, so both get cut for more proactive disruption.