Urza's Saga and Eldrazi Temple fuel their colorless shell, so Fade from History blows up Urza's Saga while also catching Blade of the Bloodchief; it will hit our own Agatha's Soul Cauldron too, so we trim that card from the mainboard. Collector Ouphe doesn't touch Urza's Saga, which is an enchantment land rather than an artifact, but it does shut off the activated abilities of their artifacts, including Blade of the Bloodchief's equip and mana rocks like Springleaf Drum. This is a grindy, high-power matchup where disrupting their colorless mana engine is more valuable than some of our slower top-end pieces like Craterhoof and Ouroboroid, which can be clunky if we're racing their Emrakul plan.