Nightshade not working?

[zuzzu]

The enemy managed to corrupt a tile in my city, despite I have Alchemist Guild and Nightshade.
Is this a bug?

https://imgur.com/a/2hWA2n3

[drake178]

Nightshade only protects the city and its tile, not the other 20 tiles in the catchment of the city, at least in the originals. And even then, it's only a counter / dispel chance. It doesn't work all the time, although it does try to remove / prevent the effect of harmful spells every turn.

[zuzzu]

Nightshade only protects the city and its tile, not the other 20 tiles in the catchment of the city, at least in the originals. And even then, it's only a counter / dispel chance. It doesn't work all the time, although it does try to remove / prevent the effect of harmful spells every turn.

Ah, I understand. What a pity. Protecting just the city is interesting, but it would have been much better to protect the entire area.

Should this be something up for discussion? Does Seravy have an opinion about it?

[Seravy]

It can't protect tiles because then using Corruption to disable the Nightshade stops working.
That's a basic tactic and one of the few reasons why a death wizard wants to have chaos books.