Coil is the final endgame raid currently its split into 3 parts of 4 "turns" (well technically Coil 1 has 5 turns but turn 3 doesn't count)
Turn 5 is the end of Coil 1
Turn 9 the end of Coil 2
and Turn 13 the final fight.
There is a Sizable portion of the community that need Turn 5, and more people that need to pass turn 9 (virtually no causals get past turn 9) and only a select few FC's per server have even GOTTEN to Turn 13 let alone clear it.
damn bro. i cant beat my lvl 45 blm quest