Lands is a nonbasic-heavy land-based combo/value deck culminating in Dark Depths into Marit Lage, or grinding with Life from the Loam and Urza's Saga tokens. Surgical Extraction needs a target card in a graveyard, so it works once a key card like Dark Depths or Thespian's Stage has been milled, dredged around, or sacrificed. It then exiles every copy from their graveyard, hand, and library, severely hampering their combo. Engineered Explosives cast for zero counters destroys every nonland permanent with mana value 0, including Urza's Saga Construct tokens and Mox Diamond (it also hits our own Lotus Petal and Mishra's Bauble, so time it carefully). Set to two counters it instead hits permanents like Disruptor Flute. Daze and Flow State are both too passive here since Lands isn't contesting our tempo and we need proactive disruption against their engine pieces instead. Disrupting the Dark Depths assembly before it happens is our main angle, but if Marit Lage does resolve, Boomerang Basics (which stays in the deck) can bounce it, and a bounced token ceases to exist.