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.