Quote Originally Posted by Scottn72
Almost every time one of my assassins manages to sabotage a building he gains a rating increase. The problem I have is when they fail at something else a few turns later ther rating decreases again.

If you have a spy in the city your planning to sabotage, the chance of success is quite high if your assassin is level 1-2, about 80% for a church and 60% for other buildings.

Just discovered this tactic last night and it's improving things a little.
Yep, that's true, I tested it out again and succesful sabotages definitely raise the agent skill. First skill-up name is "Plotter". But as Scott said, I got more familiar with the "Poor Plotter" and "Silly Schemes" traits

Good point on Scott's post was also that churches have better chances to be sabotaged for some reason, good for training your agents!