Quoraska Jungle Venture

There's some sort of fog above the Wuyun Gates. Andvari says he saw some sort of coiling snakes within it. Found an amulet of Zehir, the Cloaked Serpent, in the bed of this smuggler's house, along with scattered traces of more drugs throughout the structure. I need to get back to the Cobalt Soul as soon as possible so someone can translate these three letters for me. One from the cottage of a murdered man, one from an abandoned smuggler's cart, one from the still lived-in sanctuary of whoever lived in that cottage (maybe a Yuan-Ti?). As of yet, we have no idea if this is connected to the vines at the Lighthouse, or even how large a threat either thing may be.