Equip: Increases your mastery rating by 233. Equip: Increases the effect that healing and mana potions have on the wearer by 40%. This effect does not stack.
Sell Price: 8 5 7
Source
This item is created with Alchemy. It, as all Alchemist Stones, also servers as a tool for Transmutations.
This item was the first Alchemist Stone introduced on Patch 4.0.1, and is basically for tanks. On Patch 4.0.6, more Stones were introduced, with Agility and Strenght, for example.
It is ideal to Feral Druids, as they'll use as a defense the Socket bonus, - Critical Strike Chance - using the conversion of Savage Defense.