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.