Surgical Extraction can remove their Street Wraith, Nethergoyf, or Detective's Phoenix engine pieces from the game once you see a copy, disrupting their graveyard-fueled plan since Nethergoyf and Detective's Phoenix care directly about graveyard contents. Boseiju, Who Endures is a flexible land that can later destroy a problematic permanent if they bring one in, and keeps your mana count steady. High Noon is weak since Rakdos Delirium already plays efficient, cheap spells and doesn't mind a one-spell-per-turn cap as much as you do when trying to deploy Fable of the Mirror-Breaker and removal in the same turn. Archon of Cruelty is too slow against their discard (Thoughtseize, Fear of Missing Out) and removal-heavy, low-curve deck, so it comes out for more proactive disruption.