Mono-White Humans goes wide with cheap threats like Dauntless Bodyguard and Thalia's Lieutenant, and Redcap Melee's 4 damage cleanly answers Adeline, Resplendent Cathar or Thalia, Guardian of Thraben, though note it forces us to sacrifice a land against these nonred permanents. Disdainful Stroke is mostly dead since almost nothing in their mainboard costs 4 or more, so it's a weak choice here — reconsider in favor of more removal, but we keep a couple for Arachne, Psionic Weaver's cost increase threat or any top-end they might sideboard in. Into the Flood Maw struggles since bouncing a cheap Human just gets recast for little cost, so we cut it in favor of permanent answers. Prioritize racing their aggression with efficient removal and our own card advantage engine.