Awaken Undead

You give sentience to a Huge or smaller undead creature that is not hostile toward you, restoring a spark of intellect that mimics sentience. It's Intelligence, Wisdom, and Charisma scores become 10 if they were not already higher, and it gains the ability to speak one language of your choice that you speak.

The awakened undead is charmed by you for 30 days or until you or your companions do anything harmful to it. When the charmed condition ends, the awakened creature chooses whether to remain friendly to you, based on how you treated it while it was charmed.