Dismember is efficient removal for their small, resilient creatures like Stoneforge Mystic or Skyclave Apparition before Equipment or exile effects snowball value, and its low cost helps beat their Wasteland-heavy mana disruption plan. Null Rod turns off Aether Vial entirely, a critical piece of their gameplan that lets them deploy Solitude and other threats for free, while also shutting off activated abilities of artifacts like their Equipment once it's found. Glaring Fleshraker's small body trades poorly against their efficient removal suite (Swords to Plowshares, Solitude) and offers little against a grindy midrange deck. Sire of Seven Deaths is clunky against their many one-mana answers, though its high cost alone makes it too slow here.