Revan
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"I have cured the afflictions of these people, however there is always the fear of a lack of food and water."

Adolamin
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"Ismark? He's the burgomeister's son. He's right there, meet him yourself," the barkeep replies pointing toward Ismark's table.

Ryan
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"I would be happy to heal your infliction in the morning, I have used my healing abilities already today otherwise you would be cured already."
No new knowledge about Revan from the knowledge check, dont know why he is scouting yet so I cant tell you anything yet.
On the witches, you hear that they gather at Lysaga hill.
More about Madame Eva being a "wisewoman" "soothsayer" "witch" etc etc
On the chapel, superstitious mutterings about the infection spreading from there

Myrrdin
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"I too am new to this region, I believe that following the villagers suggestion of talking to Madame Eva is the best course of action for your questions. Perhaps the burgomaster will have more to say."
Ill let you know if your blink dog finds anything out when I know what he could find out.
You could not see the distinct points at which the fog spread from, but you could find the general areas.