Eldrazi Tron leans on a heavy artifact and colorless land base, so Meltdown can wipe out cheap artifacts like Expedition Map and Talisman of Curiosity, though note their bigger threats like Karn, the Great Creator and Ugin, Eye of the Storms are planeswalkers unaffected by it. Boseiju, Who Endures answers their nonbasic Tron pieces like Urza's Tower or Eldrazi Temple, disrupting their explosive colorless mana. Golgari Thug's dredge is clunky against a deck that can exile your graveyard resources incidentally via Kozilek's Command, and Burning Inquiry risks feeding cards into a graveyard where Emrakul, the Promised End and other high-cost spells get cheaper. Keep your Creeping Chill plan intact since it's a fast, resilient clock against their slower ramp strategy.