The Children of Ereshki

The Children of Ereshki is a cult named after the Elven god Ereshki. They believe that the gods of the old world do not belong in the Ironlands. Despite the apparent absence of any Firstborn peoples, they are certain that The Ironalnds is not the domain of men, and therefore the gods of men are not welcome here. They seek to remove power from the invading deities in order to gain favor with the true gods of these lands. Considering no evidence of the Firstborn has ever been verified, most Ironlanders are keen to dismiss The Children of Ereshki in favor of the old world gods that walk among them.

Tactics
Above ground, they act like any other religious group and recruit members through preaching and promoting their god. Behind that veil, they will act in the shadows to cull the most vocal non-believers and blasphemers. They see the old world gods as a plague, and as such it must be eradicated.
 * Preaching in town squares
 * Convincing new recruits one at a time
 * Missionaries sent to remote locations
 * Kidnapping/killing of blasphemers
 * Spreading misinformation
 * Spying
 * Hiring of mercenaries
 * Maintaining plausible deniability