Enlighten Undead

You touch an undead creature. Its Intelligence score increases by 1d8 + your spellcasting ability modifier. It regains any features, abilities, feats, traits, and proficiencies it had in life. It understands and can speak the languages it knew in life and learns one that you know. As well, its alignment changes either to what it was in life or to be the same as yours, your choice.

You can allow it to regain its memories, personality, and soul or give it a personality of your choice. In any case, it becomes sentient.

If it is under your control, it willing does what you say, even though it has free will.