Amulet of Goodness

It looks like a simple ornate necklace of silver and gold. In the center is a bright topaz gem.  

Sentience

Aeternum Vinculum is Chaotic Good by nature and has a Intelligence of 18 (+4), a Wisdom of 20 (+5), and a Charisma of 14 (+2) when in its amulet form. Aeternum Vinculum understands all languages known by its wearer and is able to communicate to its wearer telepathically. It has hearing and darkvision out to a range of 60 feet. Aeternum Vinculum is generally a "Destiny Seeker" and is convinced that it and its wearer have key roles to play in future events.

Personality

Aeternum Vinculum contains a solar within it, fallen or not. the solar has been imprisoned within the amulet. Aeternum Vinculum is kindhearted but is quick to unleash its fury in battle and will often give commands to its attuned wearer and in order to quickly win.  

Imprisoned Will

If the wearer takes 60 damage from a single attack/spell or is struck by 4 different opponents in one round the wearer may choose to embrace Aeternum Vinculum's will by speaking the command word "Freedom." The amulet emits a burst of intense radiant light, hostiles caught in a 30 foot radius must succeed a DC 20 saving throw or be blinded for 3 rounds of combat. For the next minute a Solar appears and will take orders from the wearer of the amulets wearer. If the owner falls unconscious or is killed then the amulet reverts back to its standard form.