Eldrazi Tron assembles Urza-land mana to deploy large threats like Thought-Knot Seer, Karn the Great Creator, and eventually Emrakul, while Chalice of the Void and Trinisphere lock out your cheaper interaction. Your Field of Ruin and Demolition Field are critical here — disrupt their Urza-land assembly aggressively so they never reach full Tron while Cleansing Wildfire provides additional land disruption. Kataki, War's Wage taxes their Mind Stones and punishes any artifact-heavy builds, while Wear/Tear cleans up a resolved Chalice or Trinisphere that would otherwise shut off your interaction. Mana Tithe is poor since they develop mana quickly and will have spare mana to pay; Chandra is not a priority threat since you need to be proactive on disruption rather than building up planeswalker value.