Bind

You grasp the wrists of a willing or unconscious huge or smaller creature with 0 hit points remaining, creating a magical bind that holds its hands together, with similar binds around the ankles and mouth. While bounds, the creature cannot speak, it’s speed is reduced to 10 feet, it can’t fly (if it could), and it cannot move more than 60 feet away from the caster unless its caster allows it. Additionally, it cannot regain more than 1 health point.

When you cast the spell, set a codeword in your mind. When you speak it, regardless of where you are, the creature is released and the spell ends early.