Disabled the vanilla fallen to seduction incident for the Vlad and added the custom one.

Now the runefang event trigger will also check the saved value.

Now you're unable to press the vassal button if he is already a vassal. Now characters of your vassal will have an undead attribute.

Now Vlad's vassals spread Vampiric corruption and are immune to Vampiric attrition

Fixed the problem of Vampire Coven's vampiric corruption effect not affecting the region.

Nerfed Vampiric influence from Coven to 4 from 10. As you can gain them without fighting.

1. Added Vampire Coven building hero ability via any settlement actions
2. Increased vampiric influence required for vassalizing human races by 50.
3. Now assassination lowers your popularity even if you turn off the script debug.

Some of the localizations suggested by Kriega1