Thoughtseize is premium here, stripping their Reanimate, Animate Dead, Shallow Grave, or Dark Ritual before they can cheat Griselbrand or Atraxa, Grand Unifier into play. Endurance's enter-the-battlefield ability can put their graveyard (including a discarded Griselbrand or Archon of Cruelty) on the bottom of their library, denying the reanimation target entirely, and it can evoke for free if we're mana-light. Collector Ouphe does nothing against their spell-based combo plan, and Temur Sabertooth is too slow to matter before they combo off. We keep our full ramp suite since we still need to race or disrupt fast.