You target one creature that you can see within range and that can hear and understand a language you speak. The creature must succeed on a Wisdom saving throw or be subject to this spell.
Upon a failed save, a magical bond is established, forcing the exchange of two reciprocal vows:
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Your Vow. You speak the first vow aloud, stating your one-sentence promise or restriction. This vow is freely chosen by you.
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Target's Vow. The target is then magically compelled to speak a second vow back to you. The precise wording of this one-sentence promise or restriction is psychically projected from your mind into the target's, and they are forced to repeat it aloud as their own.
Both vows must be stated in a single sentence and focus on a specific, non-suicidal goal, action, or state (e.g., "I will leave this area willingly," or "I will not harm you"). The duration of the mutual vow is 1 hour.
For the duration, both you and the target are magically bound by the agreements. If either creature willingly and knowingly breaks the core intent of their vow, they immediately take 2d10 psychic damage.
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Note: This damage increases by 1d10 for each spell slot level above 2nd, and the damage cannot reduce a creature's hit points below 1.
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