User blog comment:Krayfish/Ashadra - The Alternate Earth/@comment-771241-20120906005002/@comment-1743498-20120907041605

Well, it's not really a retcon. Just an elaboration.

The Tokarthi would have chosen humans as the sentient race of Ashadra for several reasons:

1. They were the closest sentient race nearby and would not need to travel far.

2. Humans are highly adaptable.

3. Other species such as the Dhragolon would not suffice as they were already in the space age.

Selvarius would have commanded this (and have these humans as his successors) because he still wanted to have a say in mortal affairs. When the Covenant was created, Selvarius would have reluctantly agreed to the creation of the Harbingers, so he's doing what he can to create something that could stop the Harbingers, but at the same time, maintain the order of the universe without ruling with tyranny.

Galiana could have become the chosen of Selvarius purely because she was born with an ideal genetic code to lead her kind to new age of order. There could even be multiple chosen ones, but Galiana was merely the only one that survived the Harvester invasion.