Izzet Affinity is an almost entirely artifact-based mirror-adjacent matchup, so Disruptor Flute set to tax Artifact spells hits nearly their entire deck while leaving your already-resolved permanents untouched. Pithing Needle shuts down Emry, Lurker of the Loch's recursion ability or a Kappa Cannoneer's unblockable trigger, and Haywire Mite can destroy their Thought Monitor or a problematic artifact before it snowballs. Welding Jar protects your own key artifact from a Metallic Rebuke or removal-adjacent effect at a critical moment. Since games come down to who assembles their engine first, trim the slower Tezzeret and Fleshraker copies for these proactive disruption pieces.