This is the mirror, so Galvanic Blast is a premium removal spell for Pinnacle Emissary, Kappa Cannoneer, and Emry, Lurker of the Loch, hitting for 4 with our own Metalcraft easily active. Whipflare sweeps their nonartifact creatures, though note most of both decks' creatures are artifacts so it's narrower here than usual; it still cleanly answers an unequipped Emry or any non-artifact token. Blood Moon isn't on our sideboard list and is excluded; instead we lean on efficient removal since mirror matches are often decided by who answers the opposing Kappa Cannoneer or Urza's Saga Construct first. Salvage Titan and Claws of Gix are cut as they're too slow to matter in a fast artifact mirror.