Affinity's biggest hate piece is Tormod's Crypt — all four copies are in the main deck — so your primary concern before resolving Living End is neutralizing those. Force of Vigor can destroy two Crypts for free off a green card, and Ingot Chewer and Foundation Breaker both cycle into the graveyard as elementals while doubling as artifact removal when needed. Inevitable Betrayal steals Kappa Cannoneer or Pinnacle Emissary and provides a powerful backup angle that doesn't rely on the graveyard at all, which matters when they bring in Damping Sphere and Consign to Memory post-board. Sequence your turns so you clear their graveyard disruption before cascading — a Living End through a live Crypt is a catastrophe — and prioritize cycling your elementals early so your graveyard is stocked and ready the moment their Crypts are gone.