Grixis Reanimator wants to fuel Unearth and Persist off Archon of Cruelty or grind with Psychic Frog and Abhorrent Oculus, so Surgical Extraction is strong once Archon of Cruelty or a key creature hits their graveyard — exiling it denies both Unearth and Persist recursion. A second Force of Negation stops a crucial Unearth or Archon of Cruelty for free on their turn, and Mystical Dispute is cheap, efficient interaction that also discounts hard against their own blue spells like Thought Scour and Spell Pierce. Cut Brainsurge and Isochron Scepter, which are too slow to keep up with their graveyard-fueled value engine. Prioritize countering or exiling Archon of Cruelty over anything else, since its enter-the-battlefield trigger snowballs games quickly.