Animate Greater Undead

This spell creates an undead servant. Choose a pile of bones or a corpse of a Huge or smaller creature within range. The creature must have been a beast, giant, or plant of CR 5 or lower. Your spell imbues the target with a foul mimicry of life, raising it as an undead creature. The target becomes a skeleton if you chose bones or a zombie if you chose a corpse.

The target retains the statistics that it had in life, except for the following modifications:
The target loses any trait, such as Amphibious, that assumes a living physiology.
The target can't cast spells, and thus loses the Spellcasting and Innate Spellcasting traits if it had them.
The target's ability scores and traits are adjusted as per the skeleton or zombie entry of the NPC Features table on page 282 of the Dungeon Master's Guide.

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 24 hours, after which it stops obeying any command you've given it. To maintain control of the creature for another 24 hours, you must cast this spell on the creature again before the current 24-hour period ends. This use of the spell reasserts your control over one undead of CR 5 or lower that you have animated with this spell, rather than animating a new one.