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 Stomper Kreeg, Dire Maul North(57%).
Classic 1.15.9.69722
Kreeg's Mug
Binds when picked up
Held In Off-hand
+12 Stamina
+15 Spirit
-10 Intellect
Requires Level 55
Sell Price: 55s 37c
Forever Beta 1.60.1.70009
This item does not exist in the Forever client.