Mono-Green Landfall wants to go wide and scale creatures with landfall triggers, so Dark Deed and Stab help pick off small creatures like Sazh's Chocobo and Llanowar Elves before they snowball. Cecil, Dark Knight's deathtouch trades up with anything they land, and Kaito, Bane of Nightmares can tap down and stun their key threats. With no sideboard cards available, the 75 stays the same; focus on using removal proactively on mana creatures and Mightform Harmonizer rather than waiting. Case of the Stashed Skeleton provides a body to race, while Corpses of the Lost provides bodies to race and block Landfall's ground creatures.
This is a mirror-adjacent grind against another black-based midrange deck packing their own copies of Kaito, Bane of Nightmares, Cecil, Dark Knight, and Requiting Hex, so removal efficiency and card advantage matter most. Dark Deed answers their Cecil and Stab answers their Spyglass Siren cheaply, while Ral Zarek, Guest Lecturer's -1 discard and -2 reanimation help grind through their card advantage engines like Enduring Curiosity and threats like The Wondrous Wasp. Kaito, Bane of Nightmares is a house on both sides of the board, so protecting yours and pressuring theirs is critical. No sideboard swaps are available, so lean on sequencing removal to answer their early drops before Floodpits Drowner and Spyglass Siren stabilize their board.
Dimir Excruciator is a slower, more controlling black-blue deck relying on discard (Duress, Deceit) and its own removal suite (Requiting Hex, Bitter Triumph) before landing Doomsday Excruciator, so resolving and protecting threats matters more than combat tricks. Kaito, Bane of Nightmares and Ral Zarek, Guest Lecturer both provide card advantage that's hard for them to fully answer, and Cecil, Dark Knight's deathtouch discourages their creatures from blocking. Since this is a grindy matchup, keep removal like Dark Deed available to answer their Superior Spider-Man copying your best creature. No sideboard swaps are available, so focus on sequencing threats to play around their discard spells.
Suggested new sideboard cards to pick up for the current metagame.