Hunt 12: The Dead Ought Sleep Forever
Ixtab - Rank II
You can obtain the Hunt for Ixtab after you finish the story through Eruyt Village and obtain Lente’s Tear. You can find Bill No. 11 for Ixtab on any of the Notice Boards. This hunt is relatively easy at the point that it becomes available during a regular playthrough.
Petitioner
High-Chief Zayalu, who you can find in Jahara in the Elderknoll area next to the other elders of the tribe. You can warp to Jahara from any of the orange Save Crystals.
Mark Location
You can find the Ixtab in the Phase 1 Shaft area of the Henne Mines. You can either walk to the Henne Mines through the Ozmone Plain, or you can warp into them using an orange Save Crystal and backtrack your way to Phase 1 Shaft.
Ixtab is in the southeast corner, where you initially found the Henne Mines map in the green Urn. You will not be able to see it there until you get very close.
Hunt Battle
Level: 24
HP: 22,562
Steal: 
Dark Crystal, Book of Orgain-Mille, 
Flame Shield
This Mark is extremely easy compared to the previous ones you have likely already defeated. The only difficulty you will face is that it might cast Doom on one or more of your party members, and you cannot remove Doom using the spells you have, but you can use a 
Remedy if one of your party members has activated the Remedy Lore 3 License.
You can find a video of this battle in the Zodiac Age version below:
Return to High-Chief Zayalu in Jahara to receive your rewards: 1,300 gil, an 
Ether, and a Soul Powder.