Affinity is almost entirely artifacts, so Meltdown is exceptional here — even at X=1 or X=2 it can wipe most of their Pinnacle Emissary tokens, Mox Opal, and low-cost permanents, and at higher X it can catch Kappa Cannoneer. Wear // Tear's Tear half is a clean answer to Urza's Saga, while its Wear half handles opposing artifacts. Pyroclasm sweeps their 1-toughness Drone tokens, though Pinnacle Emissary itself survives the damage. This matchup rewards proactive artifact destruction over passive removal since their engine cards enable each other; use Meltdown early rather than holding it, since their board can snowball quickly once Weapons Manufacturing or Urza's Saga is online.