Eldrazi runs Chalice of the Void on the play to blank your one-drops and cheap spells, and while Collector Ouphe doesn't stop Chalice itself (a mana ability isn't needed to activate it, but it's still just an enters-the-battlefield static artifact with no activated ability to shut off), it does nothing there—so lean on Dismember instead to answer their Reality Smasher or Thought-Knot Seer efficiently even when mana-screwed by Wasteland-style denial from Eldrazi Temple-fueled starts. Note we're keeping Collector Ouphe in only as a cheap green creature for Natural Order/Green Sun's Zenith synergy, not for its ability, since their deck plays no artifacts with relevant activated abilities to shut off. Shang-Chi and Wirewood Symbiote's combo synergy is too slow against their Ancient Tomb and Eldrazi Temple-fueled fast starts, so prioritize removal and consistency instead.