Forge a Contract
When you attempt to forge a contract with another entity roll+CHA on a 10+ your contract is successful and you set the terms. Though it is a favorable contract on your end something must attract the other signee, the GM will have the last say as to what is a deal breaker here. On a 7-9 the contract does not particularly favor either party but both see potential for benefit. On a 6- the contract favors the other party, the GM will tell you how and you can refuse to accept, but you are likely to spark some dissent.
DM Notes
If someone Forges a Contract with an entity of particularly powerful persuasion such as a god or dragon or other of such like then it might be reasonable for a Meyda-well to be part of the bargain. This would unlock access to the Transfuse move for that player.