An eerie black orb has appeared in the Temple of Trials. Go and investigate it!
This bounty is available to complete after beginning Errand 131.
He's actually pretty pathetic compared to his earlier counterpart. Buff up your party, then issue an All-Out attack and just beat the life out of him. His Devastation attack does a decent amount of damage to your party; don't worry about defending against it, but be sure that your party has a decent amount of health afterward. Bash (or smash) away at him, hopefully canceling an attack and giving you a chance at a gold glim.
Defeat it and you'll complete the bounty hunt, return to the Swift Solutions to claim your reward.