You can cast this spell only at night. Choose a corpse of a Medium or Small humanoid within range who died from one of your own blood based spells. The corpse is engulfed by the ground beneath it at the start of the casting, and at the end of the casting it becomes a vampire spawn under your control as it climbs out of the ground, eager to serve you. (The GM has game statistics for this creature.)
As a bonus action on each of your turns, you can mentally command any creature you animated with this spell if the creature is within 120 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 have given it. To maintain control of the creature for another 24 hours, you must cast this spell on the creature before the current 24-hour period ends. This use of the spell reasserts your control over up to three creatures you have animated with this spell, rather than animating new ones.
This spell is affected by Undead Thralls, but is not given automatically like Animate Dead is.
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