Meltdown is a mostly one-sided blowout against Affinity's artifact-heavy board, wiping out Mishra's Bauble, Mox Opal, Welding Jar, and smaller Constructs while scaling to hit bigger threats like Kappa Cannoneer if needed. Vexing Bauble counters any spell cast without spending mana, which hits their zero-cost artifacts like Mishra's Bauble, Mox Opal, Welding Jar, Tormod's Crypt, and Claws of Gix. It also counters our own spells cast for free, such as a Blazing Rootwalla cast off madness, so sequence carefully. It's also a cheap artifact we can later crack for a card. Keep in mind it has mana value 1, so an Engineered Explosives with one charge counter will destroy it. Burning Inquiry is unsafe since it hands Affinity three fresh cards and does nothing to slow their development. We prioritize sweeping their board over our own linear speed since removal in the air matters more than forcing racing.