The Unknowable One is one of the four Rampage Alert that periodically rotate with other Rampage Alert. The main reason to do this Rampage is to obtain at least 2 Petrified Scale for your Justice Gear, an endgame gear set.

In order to start this Rampage, you're require to have a minimum of 8 players to start this Rampage. It is advisable to form a private group to make this run move smoothly. Here is some tips for each roles:

• A Healer to make sure everyone doesn't die in this encounter
  
• A couple of DPS to kill the Shark faster and kill all the trash mobs
  
• A Tank to tank the giant ghost shark and pulling it to the Bomb

At the start of the mission, your entire group will be underwater. Turn on your Travel Power. Confront the Unknowable One aka the giant ghost shark. A Tank with a healer shouldn't have any problem dealing with this fight, at first.

After deal a chunk of damage to the shark, it will gain two buff, Mad with Power and Dark Presence. Mad with Power will keep stacking to power its own attack. Dark Presence will make sure that if you attack the shark under this buff, you receive damage in return as retaliation. From here, the tank should lead the Shark to the Magic Bomb. To find the bomb, it should has a light pillar for you to see from a distance as the image provides. Here is a close up to what the bomb looks like:


The DPS should help clear the trash mobs while the tank is pulling so they don't end up killing your healers.

When the Shark is near the bomb, the DPS should be able to target the Magic Bomb. By destroying this Magic Bomb near the Shark, the Shark will lose both the Mad with Power and Dark Presence buff, making it vulnerable for attack. As the fight progresses, the shark will start unleashing more attack:

• Starting around 2/3 HP, the Shark will release a giant PBAOE sphere that will damage the player if they don't block
  
• Starting around 2/3 HP, the Shark will launch a range AoE Sphere on a random player. The Target should move away from other players so they do not get hit by it.
  
• At around 1/2 HP, the Shark will periodically summon two cyclones around itself to damage any players around it.

Repeat this until the shark is dead. Once the shark is dead, collect your reward and hope you obtain a Petrified Scale from this fight. The Reward Circle is located where your group spawn at the beginning of the fight.