You choose a creature within range and command it to do something. That creature must succeed on a Charisma saving throw or be charmed by you for the duration of the spell. A creature you or your allies are fighting has advantage on the saving throw. You can choose to end the spell early as a bonus action. A creature that can't hear you, can't understand you, or can't be charmed automatically succeeds the save.
While charmed by you, the creature obeys your commands to the best of its abilities. It will not obey a command that puts its life in danger.
The spell ends early is the creature is targeted by a dispel magic, greater restoration, or wish spell. It also ends early if the creature is attacked by you or your allies.
At Higher Levels: When you cast this spell using a 4th level spell slot, the duration is ten minutes. If you use a 6th level spell slot, the duration is 8 hours. If you cast it using a spell slot of 8th level or higher, the spell lasts until dispelled or you end it as a bonus action.