Create Name

With this spell, you attempt to bind a true name to a creature that does not have one, or to change a creature's current true name. The creature must make a Wisdom saving throw (though it can choose to fail). On a failure, the creature is bound to the new name, which must be spoken by the caster. On a success, the creature takes 5d10 psychic damage and is not bound to the name. While bound to the new name, the creature suffers the effects of true name-based spells and spell effects (like Resonant Utterance), and can repeat the saving throw when damaged or otherwise affected by those effects.

If the caster maintains concentration for the full duration of the spell, the name is permanently bound to the creature and cannot be unbound by any spell other than wish.

If this spell is cast at 9th level, the duration necessary to permanently bind a name becomes 1 minute.