Tron ramps into giant threats like Maelstrom Colossus and Bramble Wurm off Expedition Map, Candy Trail, and Urza's lands, so Dust to Dust is excellent disruption, exiling their artifact mana-fixing and card-selection pieces to slow the ramp. Saruli Gatekeepers' life gain helps you survive the eventual big swings while you race with your own gates-and-cloak plan. Cut the least impactful ramp cards since your own manabase is already dense enough — you need action, not more lands. Race aggressively; Tron's early turns are soft, so pressure before Urza's Tower comes fully online.