Hi all. I’m new here although I’ve been lurking for a few months.
@devilishrobby I thought the same thing. My first thought was that she (and Yaz before her) had landed in the Gallifrey matrix (where deceased Time Lords go). Maybe that’s why Yaz was returned…she’s not a Time Lord. Crazy bonkers theory here; would the Master have been “uploaded” to the matrix when he/she died in The Doctor Falls? Maybe he found a way to escape and bring all the past Time Lords with him. That’s who the creatures are – deceased Time Lords.
Someone tell me where the holes are in my theory because I’m sure there are gigantic ones!