Anyhow, did the bonus battles on Girugamesh event. Sheep master race.
Ultimate Omniscient + Minotaur SetupL80 Krile: Bahamut R2/Valefor R5, Dr. Mog's Teachings
L80 Cait Sith: Halting Rumba R3/Multibreak R3, Mako Might
L80 Ashe: Alexander R5, Maduin R5, Devotion
L80 Exdeath: Meteor R3, Dispel R4, Ace Striker
L80 Relm: Curaja R5, Shellga R2
RW: Lulu's Focus
I honestly should've brought Protectga instead, but this wasn't a big deal. Halting Rumba keeps Omniscient completely harmless, so I didn't have to worry about him at all. Minotaur's AoE counters kinda hurt when they happen, though. I should have brought Ixion instead of Alexander, I forgot Minotaur absorbs Holy, but otherwise no big deal - they're individually sorta frail and Focus+Sheep Song make even 9x mults hit like a freight train. Also of relevance is the fact that Minotaur can't counter summons! So yeah, asplosions happen.
Ultimate+ Bartz setup, CML80 Krile: Valefor R5/Maduin R5, Dr. Mog's Teachings
L80 Faris: Full Break R3/Power Breakdown R4, Mako Might
L80 Exdeath: Memento Mori R4/Dark Zone R3, Ace Striker
L80 Gilgamesh: Banishing Strike R4/Draw Fire R4, Dragoon's Determination
L80 Lenna: Curaja R5/Protectga R2, Cetra's Destiny
RW: Y'shtola's Stoneskin II
Where do I begin? Oh yeah, I seriously lucked out because Bartz' first two turns were spent on basic physicals, so getting everything up wasn't a complete mess, and both Gilgamesh and Lenna started with the ATB gauge near full. Once all the basic tools fell into place, it was smooth sailing: under Sea Lord's Broadside, breaks, Protectga and SSII, Bartz' damage was so sad that High Regen healed most of it without much fuss. The offense wasn't amazing, but functional enough (Krile's summons went for 9.2k a pop, Exdeath's DZs went for 12k before Dark Earth Shaker). Speaking of Dark Earth Shaker, having both it and Neo Almagest seriously paid off: late in the fight, the offense boost was very welcome and a 25k Neo Almagest by the end sealed the deal. ID resist accessories to trivialize Blue Mage: Missile were also pretty clutch - in theory, the counters could've been seriously scary, but in practice lol it only ever hit twice because Krile's 50% res fumbled. I'm honestly not sure I'd be able to pull this off without Sheepsong and Exdeath's nuking arsenal, but with it, everything was smooth sailing. Once again, sheep master race.
EDIT:
Nope. It'd take too much S/L to get all my mitigation up without him killing anybody (Closest I got was him using Meteor while Fran was charging Mist Overload), and I have other things to do this morning.
He -opened- with Meteor? That's a turn 8-9 unlock if I remeber his AI patterns right. Regardless, my best advice there would be running a Darkness mage with Memento Mori and Rinoa's BSB, using that mage to spam the BSB's Ice command UNTIL. THE END. OF TIME. That was responsible for about 90% of the damage dealt to Ifrit on my CM mastery run. Doesn't help you with the opening turns, but there, only fire resistance accessories can even remotely help you. That feels absolutely mandatory against him. And, worst comes to worst, you can always try him next month. Or the next after that. The fucker withstood about six months worth of power creep.