Prismatic Ending exiles their cheap threats like Ocelot Pride, Guide of Souls, or an early Ajani, Nacatl Pariah before it transforms, and with our two-plus colors available it answers most of what they play at low mana value, including Static Prison and Goblin Bombardment. Fragmentize can remove a problematic Static Prison or Goblin Bombardment. Pithing Needle shuts down Karakas bouncing our legendary threats or stops an activated ability engine. We trim Dread Return and a Narcomoeba since their wide, resilient board makes a fragile Oracle kill less reliable, and Orim's Chant is less impactful against a deck where Voice of Victory stops us from casting spells on their turn and Thalia, Guardian of Thraben makes our noncreature spells cost more.

Consign to Memory costs {U} and counters a triggered ability or colorless spell, which makes it good against Orcish Bowmasters' enter-the-battlefield and extra-draw triggers, Moonshadow's trigger, and colorless spells like Mishra's Bauble. Replicate is not free: each extra copy costs an additional {1}, but it lets us hit more than one target when mana allows. Flusterstorm can help push our combo turn through their Force of Will/Daze stack, since it counters those instants unless they can pay {1}. Pithing Needle can shut down a problematic Wasteland or a Kaito, Bane of Nightmares loyalty ability by naming the card. Orim's Chant and Cabal Therapy are weaker here since they know our plan and have Thoughtseize to find our key pieces anyway, while Dread Return is a slow combo line against a deck with Wasteland disrupting our mana. Keep the core Brainstorm/Ponder/Force of Will package intact to fight through their disruption.

Force of Negation lets us counter their Show and Tell, Aluren, or Stock Up for free on their turn, which is crucial against a deck trying to cheat in Atraxa, Grand Unifier or assemble Omniscience. Consign to Memory stops colorless spells like Lotus Petal's... note Lotus Petal's ability is activated not a spell, but it does stop their colorless artifact spells and any triggered ability off Acererak the Archlich's venture. Swords to Plowshares is weak since their big threats like Atraxa gain them life back and they rarely need to attack with it before it draws cards, so we trim removal for proactive counter magic. Shuko is largely irrelevant against a combo deck that isn't blocking creatures.