Annul counters Survival of the Fittest itself, denying their entire toolbox engine before it can start finding answers and threats. Chill has no legal targets since this opponent casts no red spells, so it stays in the sideboard. Thwart's Island-bounce cost is too disruptive to our own mana against a creature deck that punishes tempo loss. Root Maze slows down Gaea's Cradle and their mana creatures from entering ready to tap, supporting the Stasis lock plan.