Bounty: Disciples of the True Flame

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Synopsis
Firedorn and his Disciples of the True Flame have been murdering anyone who dares to hunt dragons and their kin. Someone has requested that this senseless violence comes to an end.

Walkthrough
Speak to Tealdor near Renengild's House in Stalwart Village and accept this bounty task. He'll only offer it to you once you've completed both of his tier-1 bounty missions:
 * Bounty: Meztla
 * Bounty: The Gleaming Society

Once you have the task, travel to Longwatch Falls and approach the campsite near the east edge of the map. Firedorn (a 13th level Druid) and his fellow members of the Disciples of the True Flame have made camp there, and attack as soon as they see you.

Defeat them, and pick up Firedorn's Head after the battle.

Bring the head back to Tealdor in Stalwart to collect your reward: