Originally Posted by
NyarukoW
It is so not lucky based. The coil fights are tightly scripted with limited RNG windows for the boss mechanics. You don't clear them without putting in the time an effort to recruit, organize, and coordinate, and practice. You got lucky because someone else put in all that effort outside of T5 and just need someone to provide soldiery bonus. This challenge only get harder with more current content, and probably harder than the boss itself, especially with the attitude of people not wanting newer players, being all exclusive and all.