Afforess
The White Wizard
Do you think so? It can be much more effective then it was. That was the dumb AI doing it.
I could always invest some time into making the espionage AI more ruthless.
All I said brings some ideas to make the mission more complex, like checking civics and world size. TBH I think such a mission should be needed twice in a single city with 0% of the rev bar filled to go Danger. It's just unfair that a city go to Danger with a single mission, independently from how much the rev bar was previously filled. This alone would already make the mission more fair, the ideas to make it more complex may wait more important changes, but my opinion is more related to game balance then anything else.
I'm open to looking at balance but I don't really think the effect is overpowered. I do think it can be a bit abrupt, maybe adding 1000 (half the rev bar) rev instability, plus something like 50 instability for 25 turns. That would have the same effect but give players a bit of time to react.
If this mission is allowed you may create infinite training grounds, creating the possibility of the most epic slaughter conquest strategy:
1- Become powerful, big and stable;
2- Choose a border nation and put a lot of EPs on it;
3- Coordinate some spies to become strong and put them in key cities of this neighbor;
4- When the time is right declare war against them;
5- Again when the time seems right use the spies and create havoc on the enemy land with your SoD(s);
6- Cities will start rebelling to you, then be sure to reduce every city to at least a single troop of the enemy and let them rebel forever (revolutions remove city defense and weaken troops, would you want anything else?);
7- Declare war to whoever declares war on your new "training grounds" and repeat the process;
This way you will let the subjugated civ spawn troops from rebellion to you infinitely, what means your cities are allowed to only make buildings and other stuff that's not troops. You grow economically a lot faster with the biggest army in the world where you want to sacrifice troops because you keep making more and more each turn. Sometimes enemies even gift you some of their cities, and gifting means getting much more buildings and all the of the city. Rebellion also reduces unit maintenance costs for a time (it decays every turn, but replenishes when a new revolt happens). Didn't test yet, but revolutions used to gift settlers and GGens if they ocurred in 2+ cities. Also they spawn spies with 50% stationary bonus, which means cheap missions in rebelling cities and more spies for you too.
This is a tested and time proven strategy for military conquest. Go ask the Aztecs.