You attempt to charm a humanoid whose name you know. If the target is only known by an alias, the spell will not work.

Take one action to whisper a command into the target's ear, while addressing them by name. (Ex: "Daniel, please walk into the market square and stab yourself in the foot.") The target must make a Wisdom saving throw. If it fails the saving throw, the target is now [Tooltip Not Found] by you. The [Tooltip Not Found] target will now devote all of its actions towards accomplishing the command initially whispered to it. Each round of combat, the target may attempt to make a Wisdom saving throw to break free. The spell ends when the target has either made a successful saving throw or has accomplished the command. When the spell ends, the creature knows it was [Tooltip Not Found] by you, but has no memories of the actions it has taken while [Tooltip Not Found].

At Higher Levels.  Soul Conditioning: When you cast this spell using a spell slot of 2nd level or higher, a creature which has been successfully [Tooltip Not Found] by you in the past will have disadvantage on their wisdom saving throws to break out of the spell.