Australia leads the Ashes 2-0 and needs just a win or draw at Adelaide Oval to claim the urn.
The XI features Cummins and Nathan Lyon replacing Brendan Doggett and Michael Neser, with Travis Head and Jake Weatherald opening ahead of the dropped Khawaja.
Cummins praised the squad’s depth and team spirit. England makes one change, bringing in Josh Tongue, as Ben Stokes rallies his side to fight hard on a pitch favouring spin and seam.
