Duress is weak here since most of Mono Green Landfall's threats are creatures, which Duress can't take, so trim it for board-focused cards. Vicious Rivalry sweeps their cheap mana dorks and landfall payoffs, such as Llanowar Elves and Sazh's Chocobo at X=1 or Mossborn Hydra at X=3, for a modest life cost, though it hits our own creatures too. Keen-Eyed Curator blocks their ground creatures, can grow if it exiles enough card types, and can exile Esper Origins from their graveyard to stop its flashback. Garruk's -2 symmetric sacrifice is awkward against a deck that can rebuild its board quickly, so one copy comes out for more immediate interaction.