DFFOO [JP][Shelke LC] Fiery (and ice) ST Fists and Explosions with Papalymo, Prishe and Tifa
24I have got Lulu LD but this fight is actually not the best place for using Lulu because you can only hit one target at a time and all of Lulu's BRV income are AoE based. My first clear was with Lulu so it can definitely be done, but I would rather use her somewhere else to extract more of her potential.
It is pretty much the same helicopter boss from Shelke's original event during Vayne's BT block, so if you remember how to deal with it it is much easier than the recent ones like Safer Sephiroth and Divine Bahamut.
Boss:
Reduction: 70/70
Lethal Orb (limit 15)
+4: When target takes fire dmg
-1: Boss/Player action
A very standard orb just like the old days. Get a fire enchanter / CA like Ignis or Lulu, or even just a fire dmg dealer would be fine.
Boss mechanics:
A typical periodically add summoning boss. At every 20% of its HP threshold the boss would summon the little add while rendering itself 100% evading all attacks. Though AoE debuffing effects / debuffs that enters with a CA character hitting on the little add would still affect the boss.
Also when it summon the little add, it will delay itself. So if you have high dmg potential or turn deleting characters like Zidane, it should be quite easy to achieve no boss turn and ignore everything it does.
The little add it summons don't have a lot of HP either. 2-3 high calibre attacks will kill it, though it cannot be launched unlike the helicopter, so it is better to save your Cid Raines turns / launch moves for the main boss. Every time it appears it comes with a large BRV gain, and should you let it move, it would either do a BRV/HP attack at first and then followed by batterying both itself and the helicopter and cause the main boss to act next. It is not immune to CC so you can do it that way if you don't feel like sniping it or deleting / delaying it.
Overall, simple boss, simple orb and not very beefy. With high ST dmg you can accelerate the cycle of killing the add really quickly, forcing the boss to summon the add and delay itself, thus skipping every single thing they do.
My original thought was to Bahamut summon with Tifa so her EX would continuously delay the main boss, but even that wasn't necessary. I was also going to use Jecht but it seemed like a good place to put Prishe and Tifa together lol.