The last one I think was the route I would have to go. The follower who has their own view of the faith separate from what the mainstream believe, the heretic or such.
I was thinking along the lines of the following,
Though a heresy of the general Talassan faith, the cult is no smaller or different than standard Talassan cults and similar following. (Original 3.5 rules means members of this cult are CN and may only select Chaos, Destruction, and Storm domains, ignoring Evil and not acknowledging it as a part of the faith).
The hero although sane and inherently good believes with the power he is gaining he can set the world to rights. He views his patron (although traditionally seen as an evil deity of destruction and natural disasters) as en elemental force of nature and the cosmos. It has been mislabeled as evil because of the destruction and loss it brings about. But as the natural order understands, a forest fire clears the way for new life, it is the destruction of the old, the corrupt, and the stagnant to make way for the new, the better. In a sense Talos is the dark part of Silvanus (in as much as Shar is the dark opposite of Selune), the destructive aspect of nature, but a necessary part of the natural order of things.
The new cult draws elements from the god of rot, seeing the good in the decay of things, they see the good in destruction. Unlike rot that gradually takes hold and withers away, they actively pursue destructive means to bring about change.
As a result a cultist or follower of Nature’s Fury (another name for their version of Talos) might commit some of the following deeds for the greater good or changes needed.
• In an urban environment they might level a building, tower, or destroy the road if any of them were damaged and the bureaucratic machine took too long to repair. This would force them to outright rebuild.
• If an enemy threatened the peace they would hunt down said enemy before the threat was necessarily realized.
• A furian would not take prisoners unless needed and would result to torture and other means to get to the point. Ends justifying the means and punishment being dealt to an adversary. Mercy would be shown by slaying an enemy and not letting them suffer outright unless warranted. The corrupt and wicked must be put down to make way for the new.
I figure it would be no different then a half-orc choosing Gruumsh as the patron of orcs and ignoring him as lets say the evil god of destruction who wants to destroy all elves.
Also I figure story-line wise, Talos shares his powers and secrets with non-clerics like wizards and lichs as long they promote his agenda and when he is done he would eliminate them. He would use the heresy to swell his ranks and bring further chaos, even if it were somewhat limited in its scope. maybe.
