Conceptual Balance Series (Mod)

[PvK]

Twiceborn works on pretenders?

[Alneyan]

If the Pretender in question can be affected by Twiceborn, it will work on her. This spell does not work for lifeless Pretenders, Undeads and various Demons.

[Cainehill]

On animate pretenders, sure - not undead or most immobiles. Additionally, becoming a wight mage is only a good thing for a handful of pretenders - the human mages being the most prominent example.