AMR seems to think there is a ring called Seal of the Panoply from Tazavesh with Mastery and Versatility. There is no such ring but instead there is a ring called Ring of the Panoply from Tazavesh with haste and Crit.
Weird… I see the seal of the panoply in the item data, and it is in the dungeon journal data as well… there must be something hidden on Blizzard’s end that is removing that item.
I did a global search on the game data and found nothing that would indicate it is not obtainable, yet it definitely is not in the dungeon journal in-game… really wish I could figure out how Blizzard is filtering out some of these items… or maybe there is no way to figure it out and they have it hidden in code or server-side or something.