I'm thinking that ze is powerful with magic, but has begun to get soft when it comes to other skills. Sure ze's a decent fighter, but if an area was without magic for very long, ze might actually end up hindering the team a bit. So an arc that forces Wraithvine to strengthen other skills might be interesting. The whole, "my magic levels are maxed out, I need to start increasing other areas of my sheet now" mindset? And with ze's dear friends there, it seems more to me as we're watching this, that it seems, and I could be VERY wrong here, that the prophecy is really about them getting together to help Wraithvine grow further and heal from past pains that ze has held onto for far too long?