Mono-Green Landfall wants to flood the board with mana dorks and landfall payoffs like Mightform Harmonizer and Mossborn Hydra, so you need to race and pressure rather than sit back trading cards. Colorstorm Stallion provides a fast, resilient clock that also blocks well against their small creatures, while Ral, Crackling Wit generates card advantage and Otter tokens to help stabilize against their wide boards. Spell Pierce is weak here since they can easily play around it or simply have the extra mana by the time you need it, and Flow State is too slow against a proactive deck. Keep your removal package (Burst Lightning, Prismari Charm, Get Out) intact since it answers their key threats like Bristly Bill and Icetill Explorer.
Dimir Midrange plays a grindy value game with Kaito, Bane of Nightmares, Enduring Curiosity, and Requiting Hex, so Disdainful Stroke is well positioned against their many four-plus mana value spells like Kaito and Elektra, Daughter of the Hand. Impractical Joke is often too small to matter against their resilient threats and is better cut for more proactive interaction. Spell Pierce is unreliable in the mid-to-late game once they have mana up, but Annul is mostly a sideboard hedge here since they run few artifacts or enchantments — consider it a low-impact inclusion mainly against Nowhere to Run or Enduring Curiosity if needed, otherwise lean on your removal suite. Use Prismari Charm and Burst Lightning to keep their small creatures like Spyglass Siren and Floodpits Drowner off the board.
Dimir Excruciator is a controlling deck built around discard (Duress, Deceit), removal (Bitter Triumph, Requiting Hex), and the mana-intensive Doomsday Excruciator, so Disdainful Stroke is strong against their expensive payoffs and sweepers like Day of Black Sun and Deadly Cover-Up. Impractical Joke has few good targets since they run very few creatures, making it a clear cut, and their creatures (Superior Spider-Man at 4 mana value) mean Spell Snare has limited value too. Annul is a reasonable hedge since they lean on graveyard hate and card advantage engines, though it's mainly a proactive add rather than a hard answer to anything specific here. Focus on resolving threats efficiently and using your counters to protect your gameplan against their discard-heavy disruption.
Suggested new sideboard cards to pick up for the current metagame.
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