Mono-Green Eldrazi floods the board with Eldrazi Spawn tokens and small green creatures en route to Ulamog or Ugin, Eye of the Storms, so High Noon helps restrict their ability to chain spells together. Beza, the Bounding Spring gains meaningful life and can net extra cards or bodies when behind. Avengers Disassembled's 3 damage doesn't reliably clear their bigger threats and is redundant with our other sweepers, so it comes out; the extra Lightning Helix and a land are trimmed to make room. Field of Ruin and Demolition Field stay in to strip Eldrazi Temple and Ugin's Labyrinth before they can cast their expensive top end cheaply.

Boros Energy wants to chain cheap creatures and spells every turn to fuel Guide of Souls and Ocelot Pride, so High Noon's one-spell-per-turn restriction badly disrupts their curve while costing us less since we're already a value-oriented deck. The extra Lightning Helix adds more efficient removal and life gain against their aggressive Ragavan/Ocelot Pride starts. Cleansing Wildfire and Demolition Field are too slow and too symmetric against a deck that doesn't need many lands to function, so they come out. Keep leaning on Path to Exile, Get Lost, and Solitude to answer their early threats before Voice of Victory or Ranger-Captain of Eos snowballs.

Affinity floods the board with cheap artifact creatures and Weapons Manufacturing tokens, making Brotherhood's End's board wipe mode extremely efficient at resetting the game. Vexing Bauble counters zero-mana spells like Mox Opal and Mishra's Bauble since no mana is spent to cast them; still, prioritize Wrath of the Skies as the primary sweeper. Their manabase runs nonbasics but they play around land destruction with basics, so Cleansing Wildfire is cut in favor of proactive artifact and creature answers. Use Erode and Path to Exile to pick off Kappa Cannoneer before its ward and growing counters make it unanswerable.