Do spell reduction sites stack?
 

If one has a province with 2 sites that drop, say, enchantment costs, do they stack? If I have a Ench 50 and an Ench 20, do I get 50 or 70 off? Or are they multiplicative?

Re: Do spell reduction sites stack?
 

no. IIRC, only the highest applies. I once had the unreal fortune of finding a 30 and a 50 conj site in the same province (with Kail "I loves the summons" lasa no less!!). I still only got a 50% reduction in casting. Can you imagine 3 Apsaras for 1 pearl? Or 6 Gandharvas about 6!?!

I think there's a good reason they don't stack.

Re: Do spell reduction sites stack?
 

How odd. My post didn't show up?

I think it's multiplicative. That's how forging works, even when it interacts with the Forge site.

Re: Do spell reduction sites stack?
 

The easiest way to verify which is true is to create a custom map with a province having multiple reduction sites in it with map commands, see mapedit.pdf in the doc folder. Then report back. ;)

Re: Do spell reduction sites stack?
 

I'll be testing it in-game MP soon enough :)

Re: Do spell reduction sites stack?
 

I had three 20 conjuration sites in a single province... no stacking. Quite sad, would only have been slightly better than ultimate gateway if it stacked linearly, anyway, and shouldn't I get properly rewarded when the starts align? ;)