Wondrous Item, legendary (requires attunement by a Requires Attunement by Necrotic Wizard)
While wearing this necklace, you can speak a phrase and summon the Demon Prince Azatar for a 3 times during a full week. Azatar is chained to my command while unleashed and on a command will return to the necklace. If all 3 charges are used the necklace suffers damage and survive a DC of 15 or be destroyed freeing Azatar.
Notes: Advantage: Saving Throws, Requires Attunement by Necrotic Wizard, Buff, Warding, Jewelry