No sideboard cards are available to bring in for this matchup, so the 75 stays the same. Against Eldrazi Tron, Thoughtseize and Orcish Bowmasters help disrupt their sequencing into Karn, the Great Creator or Ugin, Eye of the Storms before they take over the game. Surgical Extraction can strip Expedition Map from their graveyard to slow their land assembly. Fatal Push (with revolt) and Galvanic Discharge should be held for Sowing Mycospawn, and racing quickly with Ragavan, Nimble Pilferer and Ocelot Pride is important since Eldrazi Tron's clock is slow until it assembles its full mana base.