This is a land-ramp artifact/colorless deck built around Eldrazi Temple, Ugin's Labyrinth, and Urza's Saga to cheat out Emrakul and big Eldrazi, so Damping Sphere taxes their multi-spell turns and cuts Eldrazi Temple and Ugin's Labyrinth down to a single colorless mana whenever they would tap for two. Surgical Extraction needs a card in a graveyard to target, so it works best after Malevolent Rumble puts something like Emrakul there. It then exiles every copy from their graveyard, hand, and library. Dauthi Voidwalker is a great unblockable clock, and it exiles cards that would go to their graveyard, so Malevolent Rumble's mill gets exiled instead (and you can cash in the Voidwalker to play one of those cards for free). March of Wretched Sorrow and Force of Despair are weak here since Emrakul and Devourer of Destiny do their work with cast triggers before removal matters, so trim them for more proactive disruption. Sheoldred's Edict can use its nontoken mode to get past Spawn tokens, but it is still a clunky one-for-one against this deck.