BRG is a low-curve creature swarm with almost no noncreature spells worth countering, so Spell Pierce and Quandrix Charm are much weaker here; bring in Heritage Reclamation to pick off mana-rock artifacts or exile a graveyard card while cantripping, and The End to permanently answer a Rottenmouth Viper or Mutagen Man, Living Ooze by exiling it so it can't be replayed. Urgent Necropsy is excellent since it can hit a creature and their Obsessive Pursuit enchantment at once versus a deck full of small permanents. Keep Deadly Cover-Up and Maelstrom Pulse in as they're premium against a go-wide aggro-midrange plan. Together as One is too slow against this clock.

Izzet Spellementals wants to resolve Sunderflock and Traumatic Critique at high X, both easily hitting mana value 4 or more, so Disdainful Stroke is a clean answer, while Negate stops Prismari Charm or a key cantrip-chain enabler from resolving. Their hand is usually full of cheap cantrips rather than discardable cards, making Duress weak, and Spell Pierce is easily played around by a deck stuffed with cheap spells that leave mana up. Ghost Vacuum can proactively exile their graveyard to blunt Eddymurk Crab and Hearth Elemental's cost reduction from instants and sorceries in the yard. Keep your sweepers to reset the board once their elementals have grown via Opus-style triggers.

Mono-Green Landfall wants to jam efficient creatures and enchantments like Earthbender Ascension, so Heritage Reclamation is excellent at destroying that enchantment, or alternatively exiling a card from their graveyard and drawing a card for extra value against Icetill Explorer's land recursion. Ghost Vacuum helps strip Fabled Passage-fetched lands from the graveyard game and can eventually flip exiled creature cards into a board of flying Spirits if the game runs long. Their deck is nearly all creatures and lands with almost no hand disruption targets, so Duress whiffs often, and Spell Pierce is easily played around with excess mana from their ramp package. Your sweepers, Deadly Cover-Up and Day of Black Sun, and Maelstrom Pulse remain the core plan against their go-wide, landfall-scaling board.