Eldrazi Tron is almost entirely colorless, so Consign to Memory counters nearly every spell they cast, including Karn, the Great Creator, Devourer of Destiny, and Expedition Map, often for just {U}. Ashiok, Dream Render shuts down their Expedition Map and Sowing Mycospawn fetching by preventing library searches, which cripples their mana consistency in a deck reliant on assembling the Tron lands and finding Eldrazi Temple. Orim's Chant is far too passive against a deck that just wants to resolve a Karn, the Great Creator or an Eldrazi threat on curve, so cut it entirely for interaction that actually stops the spell. Day's Undoing is symmetrical and helps them dig for missing Tron pieces just as much as it helps you, so trim it too; keep Wrath of the Skies in as a way to answer their large Eldrazi creatures once resolved, and prioritize using Counterspell and Consign to Memory proactively on their key artifacts and planeswalkers.