Disruptor Flute naming Urza's Saga shuts off its chapter abilities (since activated abilities of that name can't be activated unless mana abilities), severely crippling their artifact-recursion engine, and can alternatively tax Goblin Welder or Emry, Lurker of the Loch. Faerie Macabre can discard itself to exile Mishra's Bauble, Urza's Bauble, or other key graveyard pieces they rely on for Goblin Engineer/Emry recursion, disrupting their combo loops. We keep Wasteland and Swords to Plowshares as premium answers to their mana engines and Kappa Cannoneer respectively. We trim slower equipment that doesn't interact with their artifact-centric game plan.