Mono Green Landfall wants to ramp lands and grow huge threats like Mossborn Hydra and Mightform Harmonizer. Heritage Reclamation is a flexible answer: it can destroy Earthbender Ascension or Sapling Nursery before they snowball, or exile a card from a graveyard (such as Esper Origins) and draw a card. Soul-Guide Lantern slows their graveyard-based value from Esper Origins' flashback and Icetill Explorer's play-lands-from-graveyard ability. The sideboard Strategic Betrayal is a modest edge: they choose which creature to exile, so expect to lose a mana elf or small creature rather than their biggest landfall threat, but it also exiles their graveyard, which shuts off Esper Origins' flashback. Duress is weak since most of their threats are creatures it can't take, and Winternight Stories is too slow against a deck that can out-ramp our card advantage.

Dimir Midrange is grindy and full of small, sticky value creatures (Dream Beavers, Floodpits Drowner, Spyglass Siren) that Vicious Rivalry sweeps away cheaply. Null Summoner strips their best card from hand and threatens to cast it later, giving us a second discard-style effect against a deck full of card advantage engines. Disdainful Stroke answers Kaito, Enduring Curiosity, or Deadly Cover-Up. Awaken the Honored Dead and Winternight Stories are too slow against their own card advantage; we trim the maindeck Duress copies since Null Summoner covers that role better by also denting their late game.

BRG is full of small aggressive creatures (Gene Pollinator, Greedy Freebooter, Callous Inspector, Biotech Specialist) so a second set of Vicious Rivalry sweeps their early board cheaply. The extra Duress copies strip their removal or Strategic Betrayal before they can use it on our key threats. Winternight Stories and Awaken the Honored Dead are too slow against a deck built to curve out and apply pressure every turn.