I just updated to the latest patch and find that the Masterful Wisdom spells are no longer available in Mournhold Cult Services. Have they been removed completely or is there a condition to get them?
Good question. In the 1.6.3-patch they do exsists, but the 'Masterful Red Wisdom' spell was the two of though.
Did you visit her before the update? I think I may know what may have happened.
I removed auto-calc from those skill fortification spells, as a fix for high level auto-calc'd restoration spellcasters. As a consequence, it removed it from sale from the Mournhold and Bloodmoon mages that sold those spells, as those two NPCs are also auto-calc'd. I've removed auto-calc from these two npcs to preserve their original spell lists, and to also prevent an issue with other plug-ins adding auto-calc spells which could appear in their spell list for sale, or altering the GMSTs of auto-calc, which would result in a vastly different spell list.
Merchants generally aren't auto-calc'd, especially spell merchants. Mainly to control their mercantile skill for bartering, and also to preserve their spell list in-case another plug-in modifies spellcasting GMSTs or adds lists of auto-calc'd spells.
I think if you visit these NPCs before this update, then their old records are still present in the save file, which includes the auto-calc flag. Since the skill fortify spells are no longer auto-calc'd, they won't appear on their assigned list. I *think* if the NPC is reset from the 72 hour cleanup, then the spells should appear again.