Eldrazi wants to land Emrakul, the Promised End or grind value off Urza's Saga and Kozilek's Command, so High Noon slows their ability to chain a land-ramp spell into a threat each turn while we draw and counter with Teferi, Time Raveler and Narset, Parter of Veils. Surgical Extraction and Ashiok, Dream Render disrupt Malevolent Rumble/Ancient Stirrings graveyard and library synergies and can strip the Devourer of Destiny/Emrakul plan if it hits the yard. Silence is weak here since they are not racing us on tempo with cheap interaction, and Spell Snare has few mana value 2 targets in their list. Keep Solitude and Wrath of the Skies in to answer Emrakul and Sire of Seven Deaths.

Rakdos Delirium relies heavily on its graveyard for Nethergoyf sizing, Moonshadow's -1/-1 counter removal, and recursive threats like Detective's Phoenix, so Surgical Extraction can strip a key piece like Stitcher's Supplier or Street Wraith before it enables delirium. Ashiok, Dream Render exiles their graveyard outright and shuts down their fetchland searching, directly attacking their core engine. Jace, the Mind Sculptor is too slow and dies easily to their efficient removal suite (Lightning Bolt, Flare of Malice), so we trim it, and March of Otherworldly Light is a clunky answer when Solitude and Prismatic Ending already cover their key threats. Keep Solitude in as premium interaction against Nethergoyf and Orcish Bowmasters.

This is the full mirror, so Mystical Dispute is excellent, costing just {U} against their blue Teferi, Time Raveler, counterspells, and Day's Undoing while also hitting our own color concerns. Ashiok, Dream Render shuts off their Flooded Strand/Arid Mesa fetching and can proactively mill away Jace, the Mind Sculptor or key spells if they end up in their graveyard, which matters since both decks grind long games. Consult the Star Charts and Sink into Stupor are too passive against a deck with the same Teferi/Narset lock pieces and Supreme Verdict, so we trim them for more precise interaction. Keep Silence and Orim's Chant in, as tempo disruption around Teferi activations is a key axis of this mirror.