I was reading the latest wayfinder issue when I noticed a set of contractual quills. I want to design the mechanics for a lawful good version of these where instead collateral is offered by both parties into the bag and if one party is unable to fulfill their part of the agreement both parties are able to send 1 message to each-other regardless of distance and the party that held to the agreement fully receives all collateral and the purse, though it may be recalled to any location designated by its creator after use. I would call it the fair-trade purse.
thoughts and ideas appreciated, don't worry about cost.