You place a spellcasting command on a creature within casting distance that you can see, and force it to perform a service or refrain from a behavior, or even to do what you ask. If the creature can understand you, it must successfully pass a perceptual immunity or be charmed by you for the duration of the spell.

Geas 5e

Level: 5th

Classes: Wizard, Bard, Paladin, Druid, Cleric

Casting Time: 1 minute

Range: 60 feet

Components: V

Duration: 30 days

Each time the charmed creature acts contrary to your command, it takes 5d10 points of psychic damage. This damage takes effect at most once a day. And creatures that cannot understand what you mean are not affected by the spell.

Any command you issue to a target takes effect except for actions that involve an action that results in certain death. If you issue a suicide command, the spell terminates instantly.

You can uncommand and terminate the spell with an action. Spells such as remove curse, greater restoration, or wish also terminate the spell.

When cast with a 7-ring or 8-ring spell bit, the spell’s duration becomes 1 year. When cast with the 9th ring bit, the spell lasts until it is terminated by the spell mentioned above.