[Cheezeninja]

I think clams are fine as they are, but I wouldn't mind seeing some anti-clam/gem producer spells just to add another layer of tactical complexity.

Maybe a global that stops all clam (maybe fetish and stones too) production while it's up. Or paradoxically makes them only function outside of a water province. A global that destroys 5% of them every turn it's up would be nice too, without, I think, being overpowering since any clam producer worth his salt has tons of astral gems for dispel.

Or maybe a province targeting spell that would shatter a certain % of items in a specific province, with lower cost items being more vulnerable and items over a certain gem cost being immune. A spell like this would not only add a clam-counter, but would be tactically useful elsewhere and limited by your ability to scout.

I also think clam income should be added to the graph.