The petitioner on this one is Popol from Nalbina. He tells you that he was recently gave robbing in Necrohol of Nabudis. He has found a beautiful axe and took it with him. Doing this he had anger Deathscythe. Now he appears in his dreams and wants to collect his soul. Popol asks you to kill the specter before it kills him.
About 128 000 HP
Resistant to Libra,
Vulnerable to Holy
Deathscythe can be found in Necrohol of Nabudis near the chamber where Chaos is (or were), but it will only appear when one of your heroes is within critical HP level. Use it - dispose of everyone in the neighborhood so that they didn't interrupt you in battle and if that's not enough attack yourself. You may even kill one of your heroes - all that matters is the life bar passing through the critical HP. Before the battle set mana restore to "Self: MP < 10% ----> Charge" and necessarily set "Ally: any ---> Arise" (or at least Raise or Phoenix Down).
At the beginning the fight is pretty easy. Deathscythe uses ordinary attacks, Darkra and Darkga (you can turn the last two to your advantage using Black Mask or Demon Shield). Somewhere around 50% it casts on itself Paling, which make it immune to all physical attacks, and then it starts using Annul (which drains whole MP) on your characters one by one. Wait till they restore some MP and start using magick against it. Around 30% Paling fades and the specter will start using Death. Be on your guard, because her Death has almost 100% success rating (at least it has while I was fighting). If you set your gambits properly you should deal with that no problem.
Bounty: 2800 gil, 2x Hi-Ether, Soul of Thamasa (1856g)