You place a magical command on a creature that you can see within range, forcing it to carry out some service or refrain from some action or course of activity as you decide. If the creature can understand you, it must succeed on a Wisdom saving throw DC 20 or become charmed by you for the duration. While the creature is charmed by you, it takes 5d10 psychic damage each time it acts in a manner directly counter to your instructions every turn it tries to counteracts the command. A creature that can't understand you gets advantage towards the Wisdom saving throw.

You can issue any command you choose, short of an activity that would result in certain death. Should you issue a suicidal command, the creature must succeed on a INT or WIS saving throw (DC 10). If succeeded then it is immune to any suicidal command going forward. If failed, the creature commits the command. 

Superior Abilities: The target's physical and mental abilities are enhanced significantly. They gain a +4 bonus to Strength, Dexterity, Constitution, Intelligence, Wisdom, and Charisma scores.

Swift Movement: The target's movement speed is doubled, and they can take the Dash action as a bonus action on each of their turns.

You can end the spell early by using an action to dismiss it. A remove curse, greater restoration, or wish spell also ends it.

At Higher Levels. When you cast this spell using a spell slot of 7th or 8th level, the duration is 1 year. When you cast this spell using a spell slot of 9th level, the spell lasts until it is ended by one of the spells mentioned above.