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 Charlga Razorflank, Razorfen Kraul(33%).
Classic 1.15.9.69722
Heart of Agamaggan
Binds when picked up
Off HandShield
776 Armor
18 Block
+8 Spirit
+7 Stamina
Requires Level 31
Sell Price: 63s 9c
Forever Beta 1.60.1.70009
This item does not exist in the Forever client.