This is a group task initiated by Maelin. The first step is to enter Sverag and fight/sneak your way to the Razorthorn zone area. Here you put on the 5 pieces of Enraged armor you got from the Preapring your new skins task earlier and sit at the base of the tower for 5 minutes. Only one person needs to do this, and the person must remain seated the entire time. If you stand for any reason, the timer starts over. You'll get various emotes during this time. Once 5 minutes pass the step completes.

The next step is fairly straightforward, kill 60 mobs. Once you have 'vented your rage' you must return to the tower, don the Enraged armor again, and sit for 5 more minutes. When the time expires, the step completes.

Head back to Maelin in PoK and hand in the 5 pieces of Enraged armor. This flags the entire group for the mission, even if they haven't done Saga or Prepare. Tell Maelin "Enraged Flesh Charm" to get a low stat Charm, which acts as your key to Razorthorn, and appears on your /keyring as well. Lastly Maelin requests you bring him body parts of the leaders. These are the Legendary Berserker Bones, and will be discussed later.

You are now flagged to request Samples of Corruption from Oathmir the Outcast.