Not yet observed in the beta: the Forever client retains this item's record without its stats. Those are sent by the server in-game.Until someone records it, the Classic tooltip is shown below. Forever has reviewed every dungeon's loot, so changes are expected.
In Classic Era, dropped by Blackrock Depths trash(0.03%).
Classic 1.15.9.69722
Braincage
Binds when equipped
HeadMail
253 Armor
+25 Intellect
+9 Spirit
+5 Stamina
Requires Level 47
Sell Price: 1g 36s 69c
Forever Beta 1.60.1.70009
This item does not exist in the Forever client.