BRG shares the same core as Jund Sacrifice above, presenting small value creatures (Callous Inspector, Gene Pollinator, Greedy Freebooter) that our mainboard Burst Lightning and combat already handle well. Rest in Peace isn't worth it since their deck isn't primarily graveyard-based, and our sideboard lacks targeted upgrades against this creature-heavy midrange shell. We stay proactive and race, since our clock is faster than their engine can typically support against direct pressure.

Rest in Peace is devastating here since Eddymurk Crab's cost reduction and Hearth Elemental's cost reduction both rely on filling the graveyard with instants and sorceries, and it also strips value from Flow State once cast. Split Up cleanly answers a resolved Hearth Elemental or Eddymurk Crab and can blow out a Sunderflock bounce-back attack. Burst Lightning is often too small to matter against their high-toughness creatures, and Clarion Conqueror's activated-ability shutdown is mostly irrelevant against a deck with few relevant activated abilities, so both trim well. Keep the low curve and Cavern of Souls to keep pressuring through their counterspell suite of Spell Snare and Get Out.

Mono-Green wants to overrun us with landfall-fueled threats like Mossborn Hydra and Mightform Harmonizer that grow beyond Burst Lightning's reach. Split Up wipes their board of tapped or untapped creatures in one sweep, which is excellent against their go-wide, grow-big plan. Sheltered by Ghosts exiles any nonland permanent (no mana value restriction) while giving our creature lifelink and ward, letting us temporarily remove their biggest threat like Mossborn Hydra while gaining a combat edge. We trim Burst Lightning since their creatures often outgrow 2 or even 4 damage quickly.