The Middle Isles
The Viper Cult believes that serpents are creatures of wisdom, to be respected and emulated wherever possible. This cult has spread in many places in the southern Middle Isles. The cult has grown powerful, with its Fangs (the name for the leaders of the movement) becoming wealthy by hiring their followers out for assassination, strangulation and poisoning being their two favorite methods.
The cult is fairly powerful and accepted in many southern cities, even if the Vipers themselves are not particularly liked.
The Viper Cult reportedly pays quite well for any sort of exotic poison.