Mono-White Humans floods the board with small Human creatures (Dauntless Bodyguard, Thalia's Lieutenant, Adeline, Resplendent Cathar, Recruitment Officer), making a second Languish a devastating sweeper that resets their board. Kalitas, Traitor of Ghet both lifelink-blocks their small attackers and exiles their nontoken creatures that would die, giving you 2/2 Zombies, denying any recursion, and it can grow itself by sacrificing those Zombies. Spell Snare whiffs on most of their curve (Thalia, Guardian of Thraben and Thalia's Lieutenant are 2, but Adeline costs three and their one-drops and Mox Amber slip under it, so it stays marginal against their creature-heavy plan, but Negate is worse since they're almost entirely creatures). Keep Fatal Push and Theorix Charm as premium removal against their aggressive Human tribal curve.