Mono-White Humans goes wide with cheap creatures (Dauntless Bodyguard, Thalia's Lieutenant, Kytheon) that pump each other, so Pyroclasm is a strong sweeper against their 1- and 2-toughness swarm before Thalia's Lieutenant counters stack up too high. Redcap Melee cleanly kills Adeline, Resplendent Cathar or Thalia, Guardian of Thraben, both of which are awkward for our burn to answer otherwise. Monstrous Rage is risky since Thalia, Guardian of Thraben taxes our noncreature spells and their removal is plentiful, and Kumano Faces Kakkazan trades down against their efficient curve of 1- and 2-drops. Keep Burst Lightning and Reckless Rage to answer Adeline and Thalia before they snowball the board.