Mono-Green Landfall has almost no interaction (no removal spells in their mainboard list) so our two copies of Spell Pierce are dead weight and come out. Extra Surrak, Elusive Hunter gives us more uncounterable, trampling bodies to race their board-building plan and punishes any attempt they make to target our creatures. Heritage Reclamation lets us blow up Earthbender Ascension or Ba Sing Se-adjacent value engines like Esper Origins before they compound, since this is a grindy mirror-style matchup where extra card advantage denial matters. Terrian, World Tyrant is a clunkier top-end that doesn't do much their creatures can't already out-body, so it steps aside for more proactive, protected threats.