Mono-White Humans goes wide with cheap aggressive creatures and counters, so Reckoner Bankbuster gives you a sticky blocker that survives combat with small Humans and continues generating card advantage. Redcap Melee cleanly answers bigger threats like Adeline, Resplendent Cathar or Arachne, Psionic Weaver. Get Out loses value since most of their creatures are cheap and replaceable, making a two-mana counter a poor tempo trade, so cut it along with the slow Winternight Stories. Keep Fiery Impulse and Stubborn Denial as your efficient removal and counters against their low-curve aggression.