[Sir_Dr_D]

It sounds like it is not wish that is unbalanced, but clamming. Personally i would prefer if calmming was taken out of the game, or weakened. Currently there is no way to counter it. Global Enchanments you can counter, clams you can't. Clams force you to either do clamming of your own, or lose. There is no alternate strategy. If the number of clamming you can do is limited, such as only one clam being effective per province, it would be better.