Source: Tal'Dorei Campaign Setting Reborn

Wondrous item, legendary (requires attunement)

Carved from the heartstone of a slain earth primordial, these gauntlets bestow immeasurable might to their wearer. In recent times, they were wielded by the legendary barbarian Grog Strongjaw, who continues to use them as he seeks worthy challengers across Tal’Dorei and Exandria.

Dormant. While the Titanstone Knuckles are in a dormant state, your Strength score becomes 22 while you wear these gauntlets. Additionally, your weapon attacks deal double damage to objects and structures.

Awakened. When the Titanstone Knuckles reach an awakened state, they gain the following properties:

• Your Strength score becomes 24.
• You can use an action to cast the Enlarge/Reduce spell from the gauntlets on yourself (enlarge only), with a duration of 10 minutes. This property of the gauntlets can’t be used again until you finish a long rest.

Exalted. When the Titanstone Knuckles reach an exalted state, they gain the following properties:

• Your Strength score becomes 26.
• While you are under the effect of the Enlarge/Reduce spell cast by the gauntlets, you have resistance to cold, fire, lightning, and thunder damage.