Rakdos Sacrifice runs its entire engine through the graveyard and recursion (Cauldron Familiar, Witch's Oven, Deadly Dispute, Fable of the Mirror-Breaker), so Rest in Peace is a backbreaking answer that shuts off Cauldron Familiar's return trigger and Fable's later value. Authority of the Consuls taxes their small aggressive creatures by entering tapped and gains you life off each one, blunting their fast starts. Field of Ruin and Demolition Field are low-value since this deck isn't particularly land-dependent, so cut them for the hate pieces. Keep all your removal since Bloodtithe Harvester and Mayhem Devil need to die quickly.