Timelord metacrisis

In doctor who, the doctor gets his hand cut off, then keeps the hand til he needs it and embews his regeneration energy into it and when Donna noble almost dies she touches the severed hand and becomes the doctor donna and has a timelord meta crisis and then when she has a kid part of the meta crisis passes down to her kid

timelord metacrisis is a thing where a human has half time lord energy in their head