Dimir Tempo leans on Moonshadow, Nethergoyf, and Murktide Regent as resilient graveyard-fueled threats; Surgical Extraction can strip a key Murktide Regent or Nethergoyf from their graveyard before it grows, denying their delve/escape value. Unmask is weaker here since they hold up Force of Will and Daze to protect their own hand, making our follow-up spells vulnerable right after. The extra Collective Brutality adds more discard plus a -2/-2 mode that answers their 1-toughness Orcish Bowmasters and Moonshadow early, complementing Thoughtseize as our primary disruption.

Sultai Aluren is a combo deck that wants to resolve Show and Tell into Omniscience/Atraxa or assemble Aluren for mass creature flash; Surgical Extraction can strip a key Aluren or Acererak the Archlich copy from their graveyard/hand interactions once discarded, while Massacre wipes their small Aluren-cast creatures if they go wide. Unmask is weaker here since they run Force of Will to protect key spells, making our discard less reliably land its target before they counter our follow-up. Collective Brutality's modes are clunky against a deck that isn't attacking with small creatures consistently, so we favor the sweeper and graveyard hate instead.

Doomsday is a combo deck assembling a five-card stack to win with Thassa's Oracle; Surgical Extraction can exile their lone Thassa's Oracle or Lion's Eye Diamond from the graveyard/hand once it's been revealed or discarded, denying their combo outlet entirely. Collective Brutality's removal and drain modes are mostly irrelevant since they run almost no creatures worth killing. Keep Thoughtseize and Unmask in to strip their Doomsday or combo pieces proactively, since disruption-based racing is our best plan against their glass-cannon kill.