Enthral Undead

This spell allows you to enthral any undead creature within rang for 24 hours. The creature must succeed on a wisdom saving throw or be charmed. After the 24 hours is up the you must try to enthral it again or it will become hostile again.  

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can affect one additional undead for each slot level above 2nd.