Mono-Green Landfall is almost entirely creatures with a heavy early curve — Llanowar Elves, Sazh's Chocobo, Icetill Explorer, Mightform Harmonizer — so a fourth Deadly Cover-Up and Day of the Black Sun for X=2 give you more ways to wipe their board before Earthbender Ascension and Ba Sing Se take over. Sear is a poor rate one-for-one against their small, wide creatures compared to a sweeper, and Duress has almost no legal noncreature targets against a deck with just a handful of enchantments. Save Nowhere to Run for anything that slips through, like Bristly Bill.

Dimir Excruciator is a discard and graveyard value deck built around Doomsday Excruciator, Superior Spider-Man, and Requiting Hex, so a second Duress helps win the disruption race by stripping their own Duress or a key removal spell before it lands. Strategic Betrayal is excellent here, exiling their creature and their entire graveyard to shut off Superior Spider-Man's Mind Swap and any Doomsday Excruciator recursion plans. Sear is mediocre against their few large, resilient bodies (Doomsday Excruciator is a 6/6), so trade it for disruption, and Together as One is too slow against a deck that can Duress it away or simply out-value you with card selection.

Azorius Tempo has no red or green spells, so Flashfreeze is dead against them and should stay in the board. Duress strips their key enablers like Airbender Ascension or High Noon before they can set up Aven Interrupter or Enduring Curiosity, while Strategic Betrayal answers a resolved Aang, Swift Savior and clears their graveyard. Together as One is too clunky at six mana against a deck full of cheap interaction like Aven Interrupter. Lean on Deadly Cover-Up and Nowhere to Run to handle their evasive flyers.