Mono-Green Eldrazi is loaded with colorless ramp and threats like Sowing Mycospawn, Emrakul, the Promised End, and Kozilek's Command, so Consign to Memory is an efficient way to counter their colorless spells for one mana. Kaheera provides a durable beater that can pressure their planeswalkers like Ugin, Eye of the Storms before they stabilize. Cut Prismatic Ending since exiling their large colorless threats requires paying a high mana value in colors we can't easily produce, and trim Spell Snare since few of their key spells cost exactly 2. Wrath of the Skies and Solitude remain vital to answer their giant threats before they take over the game.

Boros Energy floods the board with cheap creatures like Ocelot Pride and Guide of Souls, so High Noon slows their ability to chain multiple threats per turn and blunts their explosive starts. Consign to Memory counters colorless spells and any triggered abilities, useful against Galvanic Discharge's energy trigger interactions being irrelevant but still catching stray Treasure or artifact-based value. Kaheera adds a resilient 3/2 vigilance body to help stabilize the board and race Ragavan, Nimble Pilferer. Cut the narrow Prismatic Ending in favor of sweepers like Wrath of the Skies which is far better against their go-wide plan, and trim card selection that doesn't affect the board.

Affinity is packed with colorless artifact spells like Mishra's Bauble, Mox Opal, and Tormod's Crypt, making Consign to Memory a premium answer that counters colorless spells for a single mana. Mystical Dispute punishes their blue cards like Metallic Rebuke and Preordain cheaply while still functioning as a generic counter against everything else. Cut Prismatic Ending since it cannot target land permanents like Urza's Saga and struggles to keep up with their go-wide artifact swarm, and trim slower card selection for more interaction. Wrath of the Skies remains a critical sweeper against their board of small artifact creatures.