Remove Soul counters a wide swath of Tron's creature base, including Bramble Wurm, and their Prototype/cascade threats like Boulderbranch Golem and Maelstrom Colossus before they land. All three Steel Sabotage come in to counter or bounce their key artifact mana rocks and value pieces (Barrels of Blasting Jelly, Bonder's Ornament, Giant's Boulder, Expedition Map), disrupting the ramp that lets them cast their biggest spells ahead of schedule. Trim the slower Negate and Meeting of Minds, since proactively stopping their mana engine and threats is more valuable than incremental card draw against a deck that wants to go over the top. Your walls and Mulldrifters continue to buy time while these targeted answers strip away Tron's acceleration.