Mono Green Landfall ramps into big Mossborn Hydra and Icetill Explorer threats that quickly outgrow Requiting Hex's mana value 2 restriction, so swap it for Shoot the Sheriff which answers any non-outlaw creature regardless of size. Ghost Vacuum helps exile key cards from their graveyard and can eventually repopulate your board, while also answering their Escape Tunnel/Fabled Passage-fueled grindy recursion plans less directly but still provides incremental value. Iron-Shield Elf's small body struggles to trade profitably once their creatures get landfall counters, so it comes out. Keep your proactive aggression plan intact since this matchup is a race before they stabilize.