Assassin's Trophy is unconditional removal for Stoneforge Mystic, Overlord of the Balemurk, or a troublesome Karakas/Wasteland, letting us answer their efficient threats regardless of size or protection. Duress backs up Thoughtseize to proactively strip Swords to Plowshares before we commit our own threats into their dense removal suite. Sylvan Safekeeper is lower impact here since this matchup revolves around exchanging efficient removal and creatures rather than needing evasive protection, and Collector Ouphe's ability to stop artifact activated abilities is only marginally relevant against their lone Aether Vial. Keep the core creature suite since this is a fair, grindy creature matchup where card quality and disruption density win.