You place a magical command on a creature that you can see within range, cursing 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 or become charmed by you for the duration. While the creature is charmed by you, it takes 3d10 psychic damage each time it acts in a manner directly counter to your instructions and its hit point maximum is reduced by that amount until the spell ends. A creature takes this damage no more than once each day. A creature that can't understand you is unaffected by the spell. You can issue any command you choose, short of an activity that would result in certain death. Should you issue a suicidal command, the spell ends. You can end the spell early by using an action to dismiss it.

Dispel magic has no effect on this spell but a remove curse spell cast on the target can end 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 spells duration is permanent until removed.