Who on the 13th?

[LilimoLimomo]

Given that the 13th is without lifestream, whoever the warrior of light that is us on the source is there, is still there, somewhere.

I just realized that this isn't necessarily true, as there are numerous souls that have been ferried away from the 13th. Just to throw out two different flavors of examples: Unuklhai and Rubicante.

So there's no guarantee that an Azem shard is still in the 13th. It could be somewhere else. And we've also seen that there are ways to destroy souls, so there could be other reasons why it is entirely out of circulation. Narratively I would bet against any shards of Azem's soul being destroyed due to plot armor, but it's technically within the possibility space and thus worth considering.