Talk:Shadow Play - Part 1/@comment-10390252-20170921092046

Here's a prediction: I think that the six Legends of Magic sacrificed themselves to trap the Pony of Shadows in Limbo. Possibly, it is attracted to powerful ponies and tries to leech off their power to sustain itself. When Twilight frees them, she inadvertently also frees the Pony of Shadows.

This is why Shadow Lock was trying to erase the six Legends from history. If no-one knew of them, no-one could attempt to free them and, therefore, the PoS would remain trapped forever.

I'm still hoping that Shadow Lock is in the two-parter. However, given that Star Swirt, Rockhoof, Mistmane, et al are going to be in it, I doubt that there would be room for another guest star.