Speculation for Fcob

[kyorakun]

There's somewhat of a pattern in the coil fights so far if you purely look at the boss fights.

Turn 1 - Caduceus - nothing much.

Turn 2 - ADS - tank swap, rot debuff

Turn 4 - Multi-phase DPS check

Turn 5 - Death sentence, conflags, fireballs - minor dps check to get 4 conflags to meet enrage timer, phases at 55%. divebombs, DPS check on 2 phases before final phase. 1 shot mechanic known as twister, puddles in final phase.

[kyorakun]

Turn 6 - tank swap (from turn 2), yellow marker on person who needs to get into bulb (kinda similar to turn 2 rot where person with debuff has to notice), blighted, slugs.

Turn 7 - Places raid wide debuff called cursed voice, places debuff on one member called cursed shriek that can potentially wipe raid, petrifaction, phasing is important.

Turn 8 - multi-phase dps check, allagan field.

Turn 9, Ravensbeak, meteors - minor dps check to get 4 meteors - phases at 65% thermionic beam, divebombs, DPS check 2 phases before final phase. 1 shot mechanic affecting everyone in the raid - ice/fire, thunderstruck, puddles in final phase, heavensfall.

[kyorakun]

Turn 10 - Probably tank swap, debuff on one person that needs to get away from everyone else, raid wide debuff (from t7).

Turn 11 - introduces completely new mechanics

Turn 12 - Probably a huge dps check with plenty of phases. If history is to go by, dreadnaughts will still be around.

Turn 13 - Death sentence/ravensbeak at the start. there'll probably be a multi-rotation in the first phase similar to where it's optimal to affect only 4 members of the raid. Minor dps check at that too, probably at 75% since t5 was 55, t9 was 65, etc.
Real DPS check comes 2 phases before last, 1 shot mechanic affecting everyone in raid, divebombs, possibly puddles in final phase