Contract

You and another creature grasp each others hand (or closest equivalent) and create a magical contract. This contract must include terms and consequences agreed upon by both members of the contract. If neither members can agree on the terms of this contract, the spell automatically fails. Should either you or the other creature act in a manner directly counter to the contract, the agreed upon consequence will take immediate affect. Once the terms are decided, the parchment and ink used for the spell will take the form of two contracts, which can then be given to each member of the contract. Once all of the terms of the contract have been met, the two contracts turn to ash and the spell ends. A creature that can't understand you is unaffected by the spell.

The spell can be ended early if the contract owned by the other member is damaged in such a way that it can no longer be read. If the spell is ended in this way, the member who's contract was destroyed must still follow the terms set by the contract. If both contracts are destroyed, both members are free from the spells effects.

A remove curse, greater restoration, or wish spell also ends it. If the spell is ended in this way, both members are free from the spells effects.