Tron's entire plan hinges on assembling Urza's Tower, Urza's Mine, and Urza's Power Plant for a massive mana surplus, and Pillage can destroy any one of those lands (or their own Bonder's Ornament, Expedition Map, and Candy Trail artifacts) to disrupt the engine before it comes online. Relic of Progenitus can exile their graveyard to blank a Relic of Progenitus of their own or deny incidental value, and doubles as a proactive artifact if left uncracked. Cut your own Bonder's Ornament and Campfire, which are too slow in a matchup about denying their ramp, along with Pulse of Murasa and Lose Focus. Save Counterspell for their bombs like Maelstrom Colossus or Pinnacle Kill-Ship rather than their ramp pieces when possible.