An Era where you can persuade enemy units, with lower hp meaning higher chances of persuasion?

[Ascrein]

Hello. I recently played an Add-On called Persuasion Survival up to 2 players separated by a wall. You can use persuasion using leaders to try and recruit units. Lower health means higher odds of success though the persuaded unit cannot attack on the same turn he or she was persuaded, you can move him or her. Is there an Era that allows usage of persuasion on enemy units?

I kinda enjoyed that mechanic so I would like to try it in other scenarios.

If not, then is it possible to try and make an Era based on it myself?