Effects, also known as commands, are used in scripting to alter the target that was selected via scopes and conditions.They are also able to iterate through lists. They appear in: command blocks (the immediate and option sections of events, or similar: effect, creation_effect, gain_effect, success, ...); scripted effects, which can be used to group commands into re-usable macro. For the record, I see that it converts to the culture specifically of your capital, and it costs 300 prestige. Some of your vassals may convert as well, as your vassals sharing your culture will be faced with a decision if they also have a county with your target culture. You have to click on the city you want to move to on the map, when the city name and holdings pop up on the bottom left, next to the name of the city you'll see an icon with a crown and an upwards arrow: click that It's under the county holder portrait, I suspect the holder must be you for the button to show! 3 level 1 · 2 yr. ago.