Thanks for that Hendrak, I was able to track down the reference easy enough now.
Aspect of Sorrow wrote: Revision: 1951
Author: Valefort
Date: Sunday, May 20, 2018 5:59:18 AM
Message:
Modifying the phantom AC capped by Phantom levels so that it only kicks in if you have more than 20 wisdom so that the low level Phantoms aren't impacted.
The last time I played a lot was around June so that lines up with how less effective my characters have become.
But this ruling is not on any of the Phantom entries for the forums, wiki or the in game descriptions.
I am equal parts confused and annoyed at such a change. Phantom is not a powerful class and the bonus AC would be the same as is gained from taking Monk for 3 levels. This just makes Phantom a purely inferior choice for all wisdom builds now. AC from both those classes do not assist any shapeshifting forms, so the original reason for Monks limitation when combined with Druid is no longer valid.
This change specifically hurts non-shifting based Druids and any other non-lawful wisdom builds. Darkfire Disciples also lose the synergy they had with the sneak attack granting Phantom class.
I would very much like to see the reasoning for this very specific and niche nerfing of a class.