UBG Reanimator wants to Dark Ritual or Lotus Petal into Reanimate/Animate Dead/Shallow Grave on Griselbrand or Atraxa, so stripping their reanimation spell or a discard outlet like Faithless Looting with Thoughtseize is our best proactive line. Dismember can't outright kill a resolved Griselbrand or Archon of Cruelty since -5/-5 only shrinks their toughness to 2 and 1 respectively, but it's still useful to pick off smaller threats or clear a blocker before they draw us out of the game or drain our life total. Badgermole Cub and Wirewood Symbiote don't meaningfully race or disrupt their combo turn, so they're cut for interaction. Keep the mana dorks to accelerate into our own Craterhoof Behemoth or Atraxa as a backup racing plan.