Bind Undead

This spell binds an undead servant to a certain location. Choose an undead of a Medium or Small humanoid within range. The undead must make a DC 10 Wisdom save unless friendly to you, then the spell succeeds automatically. The target becomes bound to this location for the duration of the spell and will follow commands as if effected by the Animate Dead spell. The target may not be bound to an area larger than 1000ft in diameter. You may only control up to 4 creatures in this way.

On each of your turns, you can use a bonus action to mentally command any creature you made with this spell if the creature is within 60 feet of you (if you control multiple creatures, you can command any or all of them at the same time, issuing the same command to each one). You decide what action the creature will take and where it will move during its next turn, or you can issue a general command, such as to guard a particular chamber or corridor. If you issue no commands, the creature only defends itself against hostile creatures. Once given an order, the creature continues to follow it until its task is complete.

The creature is under your control for 30 days or until the caster dies, after which it stops obeying any command you've given it. To maintain control of the creature for another 30 days, you must cast this spell on the creature again before the current 30-day period ends. This use of the spell reasserts your control over up to four creatures you have animated with this spell, rather than animating a new one.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you increase the limit of creatures under your control by 2 for every lever above 3.