Awaken Skull

You touch a Humanoid skeleton skull that's not part of an Undead creature. The skull gains the ability to speak a language you understand. The awakened skull shares the alignment, personality, voice, and mental scores of a random deceased soul, but remembers nothing of that person's life (not even its name). It isn't necessarily Friendly to you or your companions, but can be influenced using normal social interaction rules. 

The skull is an Undead creature that doesn't require air, food, drink, or sleep. Its Speed is 0. You can carry the skull or imbue it with magic such as the Fly spell to allow it to move on its own. A skull (one that's not "loaded") weighs about 3 pounds. Casting a Dispel Magic on the skull suppresses its animation for 1 hour. As long as it has at least 1 Hit Point remaining, the awakened skull regains 1 Hit Point when a Mending spell is cast on it.

Your DM may customize the skull. For example, a skull awakened with the soul of a deceased spellcaster may be proficient in the Arcana, History, Nature, or Religion skill, or have the ability to cast a cantrip, or have another flavorful feature. The spell level should be taken into account when customizing the skull.

The Awakened Skull's statistics can be found in the Extras section of your digital character sheet*. The number of awakened skulls you can create with this spell at one time is equal to your spellcasting modifier (minimum of one skull). If you try to exceed the maximum, the magical effect on the oldest created skull ends immediately, and the new skull is awakened.

Using a Higher-Level Spell Slot. You can grant the skull a Fly Speed of 30 ft.

* Homebrew monster stat block available on D&D Beyond.