Affinity relies on free artifacts via Mox Opal and Urza's Saga tokens plus Engineered Explosives for sweeping your board, so artifact hate is premium. Masked Vandal and the extra Haywire Mite can exile Urza's Saga-generated Construct tokens or key equipment, while Vexing Bauble taxes/counters their zero-mana spells like Mox Opal, Mishra's Bauble, and Welding Jar. Young Wolf and Explosive Prodigy are cut since this matchup is about disrupting their artifact engine rather than grinding small bodies. Viscera Seer is replaceable here since sacrifice fodder matters less than removal.