Naturalize is strong against Survival of the Fittest, cutting off their tutoring engine before it snowballs into Deranged Hermit or Squee-fueled value. Vendetta is a fine cheap answer to Tireless Tribe or Basking Rootwalla, though note Tireless Tribe can pump its toughness by discarding cards in response, so time it when they're tapped out or low on cards. Duress is less impactful since much of their game plan (Survival activations, Weathered Wayfarer) happens via activated abilities rather than spells sitting in hand. Keep Pernicious Deed and Smother as your core removal suite against their efficient creatures, and prioritize racing before Gaea's Cradle-fueled Deranged Hermit tokens overwhelm the board.