Create Undead Beast

You target the corpse of a beast with a CR of 3 or lower within range that has been dead for no longer than 10 days. The beast reanimates under your control as a skeletal or zombified version of itself, returning with all of its hit points. The beast you reanimate becomes undead, gains 60 feet of darkvision, immunity to poison damage and the poisoned condition, and gains a zombie's Undead Fortitude trait (the GM has the creatures' statistics).

On each of your turns, you can use a bonus action to command a beast you’ve reanimated with this spell as long as it is within 120 feet of you (if you control multiple beasts, you can command any or all of them at the same time, issuing the same command to each one). You decide what action the beast 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 beast only defends itself against hostile creatures. Once given an order, the beast continues to follow it until its task is complete.

The beast is under your control for 24 hours, after which it stops obeying any command you have given it. To maintain control of it for another 24 hours, you must cast this spell on the beast before the current 24-hour period ends. This use of the spell reasserts your control over up to four creatures you have animated with this spell, rather than animating new ones.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the CR of a beast you can raise increases by 1 for each slot level above 4th.