The Secret Deal

Under Kahn's highly oppressive aura, the three semi-saints kneeling on the floor were too stunned to even speak as soon as Kahn revealed the Blood-oath Token. 

This was the most foolproof method of signing a contract in this empire and a blood oath token was something only used by the elites of the society when there were grave matters related to two different parties which required both sides to deliver upon their promise. 

But if there was any form of resistance shown by either of the participants, the ritual would fail and the contract would never be established. 

The main reason people still used it was because if either of the parties involved don't live up to the contract or tried to betray or backstab the other one… they would die within 10 hours. 

These blood-oath tokens were extremely rare and their magic was so strong that even a saint would die if they broke the contract.