Jeskai Control has almost no early creatures worth killing, so Erode and Requiting Hex are frequently dead cards against their Stock Up/Tablet of Discovery draw-smoothing plan. Duress proactively strips their removal (Fire Magic, Day of Judgment) or countermagic (Negate, Flashback) before they can use it against your threats. Strategic Betrayal exiles whatever creature they do commit to the board along with their graveyard, denying flashback and Jeskai Revelation value from recursion. Lean on discard and resilient threats to grind through their card advantage engines.