Jeskai Control wants to answer your threats one-for-one with Fire Magic, Sear, and Erode, then grind you out with Jeskai Revelation and Great Hall of the Biblioplex. Surrak, Elusive Hunter can't be countered, dodging their light countermagic, and draws you cards whenever they target him with removal, turning their answers into card advantage for you. Esper Origins is too slow against a deck built to go long and generate overwhelming card advantage, so it's cut for a more resilient, disruption-proof threat that also helps you race before Jeskai Revelation comes online.