Create Undead Horde

This spell creates a shambling army of undead. Choose a pile of Medium or smaller corpses that fill a 15ft cube. Your spell imbues the corpses with a twisted semblance of life, raising them into a Horde of Zombies.

On each of your turns, you can use a bonus action to mentally command any horde you made with this spell if the horde's within 60ft of you (if you control multiple hordes, you can command any or all of them at the same time, issuing the same command to each one). You decide what action the horde will take and where it will move during its next turn, or you can issue a general command to assault a castle entrance or city gate. If you issue no commands, the horde defends itself against hostile creatures and acts according to its alignment. Once given an order, the horde continues to follow it until the task's complete.

The horde's under your control for 24 hours, after which it stops obeying any command you gave it. To maintain control of the horde for another 24 hours, you must cast this spell on the horde again before the current 24-hour period ends.

At Higher Levels. When cast using a slot of 8th or higher, you can animate/reassert control over an extra horde.