Animate Monsters

This spell creates an undead servant. Choose a pile of bones or a corpse of a Medium or Small humanoid within range. 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.

In order to maintain control and issue commands, the caster needs to remain within 60 feet of the undead servant. As a bonus action, a singular command can be given involving both the action and movement of the creature. This command may be as general or specific as desired. If no commands are given, the creature will defend itself against hostile creatures or follow a previously given command.

For 24 hours, the creature will follow the last command given to it as long as it doesn't leave the range of the caster or a new command isn't given. After 24 hours, the creature will simply defend itself against hostiles but continue to be undead and unable to be controlled even if the spell is recast. To maintain control, the spell will need to be recast again before the 24 hours are up.   

At Higher Levels. At levels 7, 11, 14, 17, and 20, choose another monster type to make undead. You may raise this type of monster in addition to the choices of the pervious levels and the original humanoid. (It's at your gm's digression if choices are allowed if this spell is obtained at a higher level.)