Duress is excellent at stripping Ancient Stirrings, Expedition Map, or a key noncreature spell before Tron assembles its mana base, and it can also snag Breath Weapon or Unfathomable Truths before they matter. Troublemaker Ouphe's bargained ETB can exile Expedition Map, Giant's Boulder, or Bonder's Ornament, disrupting their artifact mana acceleration and land-fetching. Nihil Spellbomb does little since Tron's graveyard isn't load-bearing to its core gameplan of hitting land drops and casting big threats. Ichor Wellspring is replaceable card filtering here since proactive disruption of their mana engine is far more valuable than incremental card draw in a grindy matchup.