Object
Nestene Energy Sphere (Master's Stolen Power Core, Terror of the Autons)
A stolen, portable Nestene energy source carried by the Master in a cardboard box during Terror of the Autons. Used as a weaponized threat against the Doctor and Jo, witnessed by multiple characters during key standoffs. Distinct from stationary Nestene control globes.
15 appearances
Purpose
Powers Auton reactivation and channels energy from the Nestene homeworld to enable full-scale invasion
Significance
Master's possession of this stolen sphere forces the Doctor into desperate Morse code signals and underscores the Master's ruthless acceleration of the daffodil genocide, making UNIT's intervention Earth's last hope
Appearances in the Narrative
When this object appears and how it's used