[mangosta71]

Originally Posted by snoopy13a

Spoiler

The main doubt I have is: how would Varys have known that Gregor Clegane would smash the baby so that it became unrecognizable?

Spoiler

If he knew anything about Gregor, Varys knew that the baby would be killed in a brutal manner. Babies are soft and squishy enough that it doesn't take much for them to not be recognizable - the only distinguishing features in someone at that age are on the head (short of genotyping), and the bones in the head aren't fully developed yet. And even if Greg hadn't done a good enough job, Varys isn't above muddling the scene enough that anyone else draws the conclusions that he wants them to draw.