Boros Moxite leans on artifacts (Melded Moxite, Lembas, Ragged Short Spear) and small creatures like Glint Hawk, Kor Skyfisher, and Sneaky Snacker, so Dust to Dust exiling two artifacts at once is a strong way to strip their engine pieces like Melded Moxite or Lembas. Arms of Hadar's -2/-2 wipes Glint Hawk (2/2) and Sneaky Snacker (2/1) while leaving Kor Skyfisher (2/3) alive, still a good rate against their small-bodied board. We cut our own Giant's Boulder since it's a slow mana rock in a fast creature mirror, and trim Blood Fountain for the same reason. Prioritize racing and use Dispatch on their equipped threats.