Boros Moxite plays a lot of small, toughness-1-or-2 creatures (Thraben Inspector, Glint Hawk, Sneaky Snacker) that Drown in Sorrow's -2/-2 sweeper cleanly wipes off the board. Troublemaker Ouphe can exile a key artifact like Melded Moxite or Ragged Short Spear when bargained, disrupting their equipment and card-draw synergies. Suffocating Fumes is cut in favor of the strictly better sweeper Drown in Sorrow, and Campfire/Tithing Blade are too slow against their aggressive curve. Cast Down and Defile remain strong versus their bigger threats like Kor Skyfisher.