Audite

With a drop of your own blood on your thump, you snap your fingers and speak the celestial word which can best be translated as 'hear me'. As an action you may attempt to place control over an uncontrolled undead creature. The target must make an intelligence saving throw. Upon a failed save the target is placed under your control for 24 hours.

Intelligent undead are harder to control in this way. If the target has an Intelligence of 8 or higher, it has advantage on the saving throw. If it fails the saving throw and has an Intelligence of 12 or higher, it can repeat the saving throw at the end of every hour until it succeeds and breaks free.

At higher Levels: You can target an additional undead for each spell level over the 2st.