Fan Casting What If The Twelfth Doctor Regenerated in The Doctor Falls

The climax of The Doctor Falls will remain untouched but as we towards the end of the episode after Bill and Heather head out of The TARDIS. The Doctor still be lying unconscious in the floor of the TARDIS console room. In this version he will remain that way and not only he hears the echoes of the past companions of saying the name Doctor, but he hears the echoes of The Doctor's past incarnations saying their final words before regenerating. His skin starts to fill with a streak of regenerative energy. His face, hair and hands starts to reshape themselves as his physical being changes, then once the regenerative process, we witnessed the arrival of The Thirteenth Doctor ( still played By Jodie Whittaker ) as she sits up as still wearing the clothes of her previous incarnation as she touches her face and hair and looks at her hand as she utter the words well, this is new.