Rakdos Reanimator is functionally identical to UBG Reanimator in terms of your sideboard plan — their entire game plan collapses the moment Leyline of the Void is in play, making a turn-zero Leyline the most powerful possible start. They run more hand disruption than the UBG version (Thoughtseize plus Unmask plus Cabal Therapy), so they can efficiently clear a single piece of graveyard hate; redundancy with Tormod's Crypt backing up Leyline is essential. Their post-board Show and Tell plan is a significant threat — Ensnaring Bridge stops Emrakul and Atraxa from attacking and buys time, though you still need to win through the combo. Eldrazi Confluence can exile a creature in response to Reanimate or Animate Dead targeting it, hard-countering the reanimation spell and keeping the threat exiled rather than in the graveyard. Prioritize keeping hands with Leyline or Tormod's Crypt over faster combo hands — a turn-one kill means nothing if they go off on turn one first.