Affinity is almost entirely artifacts, so Force of Vigor is a two-for-one blowout against Urza's Saga, Mox Opal, or Engineered Explosives, and Mystical Dispute is live against their blue spells like Metallic Rebuke and Preordain at the discounted cost. Force of Negation is weaker than normal since many of their key pieces (Kappa Cannoneer, Pinnacle Emissary) are creatures it can't touch, so trim a couple copies. Subtlety and Curator of Mysteries are cut since the matchup is a fast race where a 4/4 flier or bounce effect is too slow against their go-wide artifact swarm. Prioritize resolving Living End as early as possible since they can't easily interact with our graveyard plan.