I would like to create a territory where a team can take a territory or group of territories, which gives a - (negative) number of troops to your opponent.
Imagine a game where you have a starting point castle, like King's Court 2, or feudal Epic. And part of a siege mechanism, is to starve you out of your castle. So upon approaching the castle, they take certain territories, which give -1 to opponent or something. In Kc2 for instance, there are always road leading in and out of castle. So what if I take the road to the entrance of your castle.. somewhere close but along the lines. If you can't get resources/food/water into your castle. You will slowly whittle away.
You want your 3 automatic troops, but I don't want you to have them.
So question.suggestion:
Take a territory, although in the circumstance I want, you need 3 specific territories. And these 3 territories once taken, give -1 troop to person Who controls X territory.
If no one controls X, and you have a b c, there is no -1 bonus.