UR Aggro relies on aggressive threats like Spider Manifestation, so cheap removal like Erode and Bovine Intervention is excellent at resetting their tempo. Seam Rip efficiently handles their low-curve creatures like Llanowar Elves, answering early board presence without losing momentum. Skycoach Conductor and Michelangelo's Technique are too slow and clunky against a deck racing you on tempo, and Aang, at the Crossroads' card selection is less relevant when you need immediate answers. Keep your full airbending creature suite (Aang, Swift Savior; Appa) to disrupt their threats and protect your board while stabilizing.