Blood Moon is a backbreaker against Eldrazi Tron, turning their Urza's Mine, Urza's Power Plant, Urza's Tower, Eldrazi Temple, and Ugin's Labyrinth into Mountains and completely shutting off their colorless big-mana plan for Ugin, Eye of the Storms and Karn, the Great Creator. Meltdown answers their Expedition Map and Talisman of Resilience cheaply, and can scale up to catch bigger artifacts if they stick around. Lightning Bolt is largely dead against their big creatures like Devourer of Destiny and Ulamog, the Ceaseless Hunger, since 3 damage doesn't meaningfully affect anything they're trying to resolve. We lean fully into the Blood Moon plan since denying their mana base wins the game outright most of the time.