Hecatrix Dimension
From Tardis Wiki, the free Doctor Who reference
Hecatrix Dimension was a dimension full of witches.
The highest achievement of Varaxils' science was the ability to forge artefacts in this dimension. This enabled them to eliminate their dependence on the odic energy. However, these artefacts, such as the Witch Star were very unstable and prone to catastrophic failures when brought into contact with lokic fields. (AUDIO: The Witch from the Well)