Eldrazi Tron's whole gameplan depends on Urza's Tron lands, Eldrazi Temple, and Ugin's Labyrinth producing multiple mana off a single land, making Damping Sphere devastating — if a land is tapped for two or more mana, it produces {C} instead of any other type and amount while our own single Mountains are unaffected. Smash to Smithereens destroys key artifacts like Expedition Map, Talisman of Curiosity, and Trinisphere while dealing 3 damage to keep up the pressure. Eidolon of the Great Revel is weak here since Tron's spells are almost entirely 4+ mana (Karn, Ugin, Emrakul, Devourer of Destiny), so it rarely triggers, and we're cutting Shard Volley since we need every land to fight through their lock pieces like Trinisphere. This matchup is a race against their mana assembling — apply maximum pressure before Tron comes fully online.