Mara cautions that the corrupted egg is in great danger, but there is a chance it can be saved. Three of her own Techeuns previously were cleansed of corruption.

"The effort and circumstances were extraordinary, but perhaps it can be done again."

Taken corruption feeds on itself. With luck, you may be able to find an object in the Ascendant Plane that can eat the egg's corruption and leave the egg whole.

Mara ends with a grim reminder: "If we fail here, Riven loses an egg; but we lose our path to the Witness, and all roads thereafter."