Claim the Firstborn is nearly dead since Izzet Cauldron's creatures (Vivi Ornitier, Quantum Riddler) are either too big or not worth stealing for one attack. The Legend of Roku provides card advantage and eventually a resilient threat that survives their Boomerang Basics and Academic Dispute-fueled tempo plan. Ozai's Cruelty adds reach and disruption against their card-heavy hand. This matchup is a race, so keep Mayhem Devil and the full sacrifice suite online to pressure their life total before Agatha's Soul Cauldron takes over.