Boros Dwarves is a mono-red/white aggressive equipment deck, so Flashfreeze cleanly counters key red spells and creatures like Dwarven Mauler and Kili the Resourceful. Ghost Vacuum can exile problematic graveyard resources and blunts their Equipment recursion plans while being a cheap artifact to interact with their aggressive curve. Nowhere to Run's -3/-3 struggles to kill their bigger threats like Thorin, Mountain-king or equipped creatures, so we trim it for better rate. We keep our removal suite heavy since this matchup is about surviving their aggressive curve and stabilizing.