Before you start: It is recommended that you also back your savegame up to another folder, just in case!
Begin by selecting the savegame you wish to edit using the control below, then click the button to load it.
Tested on Barony version 4.2.1.
Note: Saved games are usually located within the game folder (..\Barony\savegames\)
Once you have loaded your game, you should see a table of values that you can edit below.
Edit the values, then click the button at the bottom of the page to export your new save file!
Check box if effect should be ON. Leave timer at 0 if you want the effect to be on forever!