Golgari grinds with Sheoldred, the Apocalypse, Graveyard Trespasser, and cheap interaction like Fatal Push and Bitter Triumph, so bring in bigger removal: Scorching Shot's 5 damage kills Sheoldred outright, and Redcap Melee's 4 damage covers most of their threats. Soul-Guide Lantern blunts Graveyard Trespasser's life-drain triggers and can exile a key card proactively. Cut Burst Lightning since its base 2 damage under-kills their bigger bodies, trim Monstrous Rage since pump spells are risky into open Fatal Push/Bitter Triumph mana, and shave Boomerang Basics since it doesn't answer their resilient threats permanently. Play around Thoughtseize taking your best card and try to close the game before their three copies of Professor Dellian Fel or Culling Ritual stabilize.

Temur Indomitable Creativity wants to resolve Indomitable Creativity into a big hit like Atraxa, Grand Unifier or Valgavoth, Terror Eater, so countermagic is premium: extra Spell Pierce and It'll Quench Ya! can stop their sorcery-speed payoff or Fable of the Mirror-Breaker on the cheap. Redcap Melee's 4 damage is efficient removal for Fable's Goblin Shaman token or an early creature, while Reckless Rage is awkward since it requires you to already have a creature to pair with it and their removal suite (Fiery Impulse, Prismari Command) punishes committing creatures. Cut Boomerang Basics since tempo bounce is weak against a deck that just recasts its payoff from Indomitable Creativity anyway. Race quickly and hold up mana to disrupt their big turn rather than letting Indomitable Creativity resolve unopposed.

Selesnya Company swarms with Collected Company hits and resilient threats like Skyclave Apparition and Ouroboroid, so bigger, cleaner removal matters: Scorching Shot's 5 damage and Redcap Melee's 4 damage both reliably kill their key creatures, including a buffed Ouroboroid or Thalia, Guardian of Thraben. Burst Lightning's unkicked 2 damage is too small against their 2/3-and-up bodies, and Boomerang Basics only buys a turn against a deck that rebuilds easily with Collected Company. Watch out for Archon of Emeria restricting you to one spell per turn, which is especially punishing for a spell-dense deck like yours, so sequence your turns to front-load your best spell. Race aggressively since their deck can go wide quickly once Collected Company connects.