Affinity floods the board with cheap artifact creatures and relies on artifacts like Cryogen Relic and Baleful Strix for value, so Cast into the Fire's ability to exile a key artifact or chip down small creatures is valuable. Nihil Spellbomb can exile their graveyard to shut off any recursive value while also cantripping when it dies. Alms of the Vein and a Vampire's Kiss are too passive against a board-flooding deck that wants to go wide, so they come out in favor of proactive removal and disruption. Prioritize killing Kor Skyfisher and Glint Hawk before they can bounce artifacts for repeated value.