Eldrazi Tron's clock relies on big colorless threats like Ulamog and Devourer of Destiny plus mana rocks like Talisman of Resilience and Expedition Map, and Brotherhood's End's artifact mode sweeps the Talismans, Expedition Maps, and Giant's Boulders that fuel their ramp. Karn, the Great Creator is dangerous since it shuts off our own artifacts' activated abilities, but we have no direct answer to it in the sideboard, so the plan is to race before they assemble Tron. Artist's Talent comes out since it doesn't affect the board and this matchup is about disrupting their mana development and closing fast. Keep the full combo suite since Eldrazi Tron is often slower to actually kill us than it looks.