Hierophant's Stone

The beginning of the world of Urz is a heavily disputed subject among different faiths, cultures, and traditions. In truth as evidenced at the end of the third age and the signing of the Covenant of the Ascended, the world was created by the Warring Triumvirate. When they came together to create man, they were eventually tricked into giving him parts of their godhood captured in a magical stone known as the Blaghmendghu. The Hierophant's Stone is a shard of the original god stone of Alu'nsu-Ro that was broken off the whole stone and lost. It was placed in an ornate case, which itself is covered in priceless jewels and is crafted of the most valuable materials. The stone itself appears to be a piece of white jade until it is attuned to. Then it moves like air moving across water or through fire, but with the rigidity of stone.
Hierophant's Stone
Wondrous item, artifact (requires attunement)
Increased Constitution. While you have the stone on your person, your Constitution score increases by 2, to a maximum of 24.
Magic Resistance. While attuned to the stone, you have advantage on all saving throws made against spells or features that recharge.
Priest's Tongue. You understand any spoken language you hear. When you speak, any creature that knows at least one language and can hear you understands what you say.
Regeneration. You regain 1d10 hit points at the start of your turn. If damage from a spell or magical weapon, this trait doesn't function at the start of your next turn. You die only if you start your turn with 0 hit points and are unable to regenerate. Additionally, this feature can be used to reattach lost limbs. If you have a severed part and hold it to the stump as an action, you instantaneously causes the limb to knit to the stump.
Resonating Power. You and all of your allies gain a +1 bonus to attack rolls, ability checks, and saving throws and deal an additional 1d8 force damage any time you or your ally would deal damage.