You can find links to video and text guides for all the 8-man raids here. You can find minimum accuracy requirements for each fight in the Wiki. If you have any questions on any of these fights, please do ask in the FC for help/advice.

If you're unsure you meet DPS requirements for any of these fights, remember that there's a Stone/Sky/Sea training dummy available for each of the Savage fights to test yourself against, before jumping in.

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Heavensward (3.x) - Level 60

Alexander Gordias Savage

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/Alexander:_Gordias

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The Fist of the Father (A1S):

Boss - Oppressor

Video guide
Text guide

The Cuff of the Father (A2S):

Boss - Gobbie gauntlet

Video guide
Text guide

The Arm of the Father (A3S):

Boss - Living Liquid

Video guide
Text guide

The Burden of the Father (A4S):

Boss - The Manipulator

Video guide
Text guide

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Alexander Midas Savage

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/Alexander:_Midas

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The Fist of the Son (A5S):

Boss - Ratfinx Twinkledinks

Video guide
Text guide

The Cuff of the Son (A6S):

Boss - Blaster/Brawler/Swindler/Vortexer

Video guide
Text guide

The Arm of the Son (A7S):

Boss - Quickthinx Allthoughts

Video guide
Text guide

The Burden of the Son (A8S):

Boss - Brute Justice

Video guide
Text guide

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Alexander the Creator

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/Alexander:_The_Creator_(Savage)

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The Eyes of the Creator (A9S):

Boss - Refurbisher Zero

Video guide
Text guide

The Breath of the Creator (A10S):

Boss - Lamebrix Strikebocks

Video guide
Text guide

The Heart of the Creator (A11S):

Boss - Cruise Chaser

Video guide
Text guide

The Soul of the Creator (A12S):

Boss - Alexander Prime

Video guide
Text guide

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A Realm Reborn (2.x) - Level 50

Note that even synced, a lot of the mechanics in these fights can now be ignored or dealt with in a different way to the original strats in these guides. However, they're useful for explaining how the fight mechanics work.

In particular, T5, T9 and T13 have mechanics you need to be aware of or you will definitely die, and most likely take out everyone else with you! Please do look at a guide before going in.

There is a more up-to-date guide for doing Coil in 3.0+ here: The Heavensward Guide to Coil. It covers all turns except Savage.
There's also a joke guide, purely for a laugh: The terrible guide to the Binding Coil of Bahamut

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The Binding Coil of Bahamut (Turns 1-5)

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/The_Binding_Coil_of_Bahamut

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Turn 1:

Boss - Caduceus

Video guide
Text guide

Turn 2:

Boss - ADS

Video guide
Text guide

Turn 3:

Boss - Jump pads (don't go in with Kema)

Video guide
Text guide

Turn 4:

Boss - Elevator gauntlet

Video guide
Text guide

Turn 5:

Boss - Twintania

Video guide
Text guide

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The Second Coil of Bahamut (Turns 6-9)

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/The_Second_Coil_of_Bahamut

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Turn 6:

Boss - Rafflesia

Video guide
Text guide

Turn 7:

Boss - Melusine

Video guide
Text guide

Turn 8:

Boss - The Avatar

Video guide
Text guide or Text guide

Turn 9:

Boss - Nael Deus Darnus

Video guide
Text guide

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The Second Coil of Bahamut Savage (Turns 6-9 Savage)

These fights can't be queued for in Duty Finder - you'll need to get your own group together, and speak with Anaelle in the North Shroud (x20,y27) to enter.

To unlock the dungeon, you need to complete the quest Sing Me Another Song by talking to Alys in Mor Dhona (x21,y8). You must have previously completed the quests The Ultimate Ballad and also completed The Second Coil of Bahamut Turn 4 (i.e. T9).

Note that the rewards are exactly the same as for the 'normal' Second Coil, but you get a fancy title for killing the Savage version of each boss, plus achievements.

General changes for all turns:

- Everything has more HP
- Everything hits harder
- Can't solo tank

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Turn 6 Savage:

Changes from normal T6:

- Devour is 360 degrees
- Blight from the start
- Bulbs tether with other bulbs and boss if close enough to each other, reducing damage taken by an insane amount. You must move the boss away from the bulbs, center tanking no longer works
- Bloody Caress is used throughout the fight
- You can't do the superslug cheese strat, the slug instantly AoEs the group as it eats a honey, 3 honeys is obviously too much. You must kill them one by one. The debuff enrage is 4, 6 and 8 stacks, depending on how many slugs are alive.
- Swarm works completely differently. It targets a random non-MT and places 4 stacks on that player. Each stack applies a stack on the player that increases damage taken from each consecutive Swarm stack. At no stacks, it does little damage, at 1 stack, it does around 5,000-6,000, at 2, it will kill any non-tank, 3 can't be survived (and no, Holmgang/Hallowed Ground don't work). This works like Allagan Rot/Chain of Purgatory, you must spread the stacks to 3 other players. For the next round, the other 4 player need to take the hit, but due to RNG, it is possible you are forced to take the 1 stack hit. Swarm targets players with least stacks.

Text guide

Turn 7 Savage:

Changes from normal T7:

- Two Renauds spawn at once and they cannot be petrified a second time. They also move faster.
- Petrifaction starts at 85%
- Venomous Tail starts at 85% and grows in power throughout the fight. After last add, it applies 4 Allagan Venoms.
- When second adds spawn, Cursed Voice applies on four targets, one tank, one dd and both healers.
- After Prosector dies, you have two Shrieks at once

Text guide

Turn 8 Savage:

Changes from normal T8:

- Towers spawn at random locations, you can see what tower it is by looking at the symbol in the semi-circle. The spawn order itself never changes.
- Dread tethers with the boss if it gets too close (=wipe)
- Allagan Field starts at 85% and in last phase is used on two players (3s timer difference)
- New tower, Maximum HP down, it can stack
- 3 mines start, 4 mines mid-fight, 5 mines last phase
- Ballistic Missile knocks players away from each other before Binding players
- Homing Missile hits twice

Can't find any actual guides, sorry.

Turn 9 Savage:

Changes from normal T9:

- Raven's Blight leaves a Vulnerability Up debuff, forcing a tank swap
- Double Meteor Stream has a shorter delay between hits
- 8 comets fall between adds, first two drop almost at the same time, preventing the running method
- Heavensfall AoE rotation is reversed, the first one is the circling one
- 2 comets fall on random targets during Heavensfall, they have no colour and disappear after impact
- Ravensbeak is used in last phase, right after Claw
- Thunderstruck is applied on two targets
- 2 comets fall during Divebombs
- Supernovas are used during even dives
- Megaflare after every rotation

Can't find any actual guides, sorry.

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The Final Coil of Bahamut (Turns 10-13)

Overview and explanation of gear drops - http://ffxiv.consolegameswiki.com/wiki/The_Final_Coil_of_Bahamut

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Turn 10:

Boss - Imdugud

Video guide
Text guide

Turn 11:

Boss - Kaliya

Video guide
Text guide

Turn 12:

Boss - Phoenix

Video guide
Text guide

Turn 13:

Boss - Bahamut Prime

Video guide
Text guide