Hi, I am a regular rebellion player and have a good grasp of the base rules. We played our 1st game with the expansion the other day. Quick question about subversion.

We are confused as to how many leaders can be used in/with this mission in total?

Can you assign up to two (leaders) and then add one when you reveal? OR is the max amount of leaders assignable to Subversion one since you'll more then likely need to add a second during reveal for the oppose roll?

You can assign 2 leaders to subversion. In addition to using subversion to oppose you may also send a leader from your leader pool to oppose. There is a whole section in the rulebook on subversion. It is indeed a very different mission than any other mission and a bit tricky to understand.