Izzet Prowess plays blue spells (Preordain, Expressive Iteration) alongside burn, so Mystical Dispute is efficient interaction here: it costs {2} less against their blue spells and taxes their red spells at full cost. Force of Negation only stops noncreature spells. Cori-Steel Cutter, Expressive Iteration and their burn are valid targets, but their cheap creatures (Dragon's Rage Channeler, Monastery Swiftspear, Slickshot Show-Off) can't be hit by it, so trim a couple copies. Curator of Mysteries is a four-mana 4/4 and is too slow for this matchup. This matchup is a race, so prioritize fast cascades into Living End over grindy interaction.