Rest in Peace is the premier answer to UB Reanimator, exiling all graveyards on entry and entirely shutting off Reanimate, Animate Dead, and Shallow Grave targeting Griselbrand, Archon of Cruelty, or Atraxa, Grand Unifier. Consign to Memory handles their triggered abilities, countering Archon of Cruelty's enter/attack trigger or Atraxa's enter trigger before the value resolves, and is mana-efficient against a deck trying to go off quickly. We cut Back to Basics since it is too slow against a deck that goes off with Dark Ritual and Lotus Petal, and it also taxes our own nonbasic-heavy mana. Prismatic Ending loses value since their best targets (Griselbrand, Archon of Cruelty, Atraxa) sit well above converge range. The lone Wrath of the Skies is cut because it needs enormous X to touch their 7- and 8-mana threats. Karakas stays in: Griselbrand and Atraxa are both legendary, so it can bounce them (though not the nonlegendary Archon of Cruelty).