This Hunt can be completed any time after you have completed the Draklor Laboratory after going through the Imperial City of Archades and arriving at Balfonheim Port. The Elite Mark Bill must be picked up from Montblanc in the Clan Hall of Rabanastre.
The petitioner is Montblanc and he can be found in the Clan Hall in Rabanastre.
The battle takes place in the Withering Shores area of the Nam-Yensa Sandsea, but it is in an area that most you likely have not visited yet because it needs to be accessed through the Zertinan Caverns.
Warp to the Dalmasca Westersand and travel west into the Ogir-Yensa Sandsea. Go west from the “Platform 1 - East Tanks” area into “Platform 1 – Refinery” and then east again into the Central Junction. Follow the pathway around and take head northeast into the Zertinan Caverns.
You will arrive in the Canopy of Clay area of the Zertinan Caverns. Follow the pathway around and to the northwest out into the Nam-Yensa Sandsea.
Before you exit the area though, search the pathway for a treasure chest that contains the 
Sight Unseeing Technick. The battle takes place on the westernmost platform after you exit the cave.
HP: 115,659 (Ba’gamnan), 27,326 (Bwagi), 27,326 (Gijuk), 27,326 (Rinok)
Steal: 
Elixir, 
Dark Matter
Make sure that you prepare for the battle by buffing your party just before you approach the final refinery platform. Each of your party members should buffed with 
Protect, 
Bubble, 
Haste and Bravery/Faith.
The follow up battle against Ba’gamnan includes a few of his lackeys just like the last battle did. You should focus on casting Dispel on all of the combatants and then focus on taking out Bwagi first. Bwagi will stand in the back attacking at range and casting support spells, so it makes sense to focus your attacks there first. Take out Rinok second.
Monid will join you during the battle and will occasionally case beneficial spells such as Curaga, Regen, 
X-Potions and Protect. Be careful with your Gambits as Monid is immune to Protect and Bubble, which may cause your White Mage to continue to try casting it on him over and over again, wasting valuable MP.
None of the individual enemies are too hard to take out on their own so just make sure that you don’t get overwhelmed and don’t focus on taking out Ba’Gamnan until the rest of his party has been defeated.
A video of the battle in the Zodiac Age version is included below:
Return to Montblanc to retrieve your rewards which include 5,100 gil and a Megalixir.
Click on the following link to return to the Balfonheim Port section of the walkthrough.
