Living End cycles its namesake sorcery to reanimate an entire graveyard of creatures like Waker of Waves and Generous Ent, so Soul-Guide Lantern is critical graveyard disruption timed to strip the yard right before their cycling trigger resolves. Force of Negation is excellent since it's often free against a deck packing four of its own copies, letting you counter Living End itself or a key Shardless Agent cascade. Note Tormod's Crypt is already in your maindeck at one copy; boarding in an additional one via Soul-Guide Lantern doubles your graveyard answers since they can rebuild with a second Living End. Metallic Rebuke is too slow to stop the cycling plan and Aether Spellbomb is too low-impact, so both are cut for more targeted disruption.