The Minstrel's Ballad: Thordan's Reign
Armed with the power of Nidhogg's eye, the reincarnated King Thordan and his Knights Twelve bring the full weight of Ascalon to bear against the Warrior of Light and their compatriots.
Note that all damage and health values are scaled to the Unreal version of the fight, active during patch 6.5.
Untelegraphed tankbuster on the main target.
Avoidable AoEs appear underneath each player.
Move out as soon as they disappear.
Eight small avoidable cones appear wherever King Thordan is facing.
Move out or in-between the cones.
Untelegraphed tankbuster on the main target.
Applies a stack of 
Light of Ascalon
Inflicts 
Hysteria
Untelegraphed tankbuster on the main target.
Strikes all players with lightning.
Spread out to minimize damage.
A telegraphed
Standard raidwide.
Untelegraphed tankbuster on the main target.
Stomps the main target, dealing heavy damage.
Untelegraphed tankbuster on the main target.
King Thordan becomes untargetable and a new phase begins.
The appearance of the arena changes and a limit break gauge appears underneath the duty timer that gradually fills. Each death increments the gauge slightly. Without deaths this gauge fills completely after approximately seven minutes spent in this phase.
If allowed to fill completely,
Ser Charibert (a mage) and Ser Hermenost (a warrior) appear in the middle of the arena. Ser Charibert shackles each player with 
Burning Chains
Stack center to reduce the distance needed between two chained players to break the chain. Wait until everyone receives Burning Chains
Summons a series of fire
Move out of the AoEs as they appear.
A set of fire
A set of fire
A set of fire
A set of fire
A tower resolves, dealing minimal damage to anyone inside. If no one is inside, casts
Ser Zephirin appears in the middle of the arena, becomes targetable, and starts casting
Afterward Ser Ignasse, Ser Paulecrain, and Ser Vellguine appear on clock spots at the edge of the arena and begin casting
Reduce Ser Zephirin below 50% health as soon as possible to reduce the damage from
Alternatively, simply position yourself at the edge of the arena right in-between two prongs of the star on the arena floor, as this position is always safe regardless of the knights' dashes.
Ser Zephirin becomes targetable.
Ser Zephirin casts
So, for instance, if you have 47,000 max HP and your tanks have 60,000 max HP, the attack will deal 120,000 damage to tanks and 94,000 damage to everyone else if you don't damage Ser Zephirin at all. This means that the attack becomes survivable after damaging Ser Zephirin to roughly 50% health with sufficient mitigation and/or shields.
Ser Zephirin becomes untargetable.
Three knights dash across the arena, knocking anyone hit into the wall. These knights will never spawn opposite one another.
The dashes themselves are susceptible to knockback immunity effects, in which case they only inflict 
Vulnerability Up
While there is always one safe clock spot + opposite clock spot, finding it requires inspecting each knight. To make matters easier, simply stand on the lines in-between the prongs of the star on the arena floor. This diagram demonstrates the positioning.
Ser Janleneoux and Ser Adelphel appear on the east and west side of the arena and become targetable.
After some time, they will both cast 
Sword of the Heavens
Shield of the Heavens
They will then cycle through
As soon as one of the two knights is killed, the other immediately loses their Sword of the Heavens Shield of the Heavens
This phase does not have a DPS check. If not killed "in time," both knights will continue to cycle through
Keep the knights separated (ideally east and west, with one tank taking each knight) at all times to ensure they don't tether. Always target the knight with Sword of the Heavens
If you have Shield of the Heavens
Once blue markers appear, place the first north, the second south, and the third north again, to ensure the other party members only take minimal damage from each jump.
If you're tanking the knight with Sword of the Heavens
Five knights appear in the middle of the arena.
Three of them cast a yellow tether to three random players and begin casting
Ser Grinnaux places AoEs underneath each player and begins casting
Meanwhile, all untethered players receive an ice marker, indicating they will be hit by 
Frostbite
Finally, Ser Grinnaux uses
Stack in the center of the arena and wait for the red
Once
A knight tethers to a random player and, after some time, dashes towards them, dealing high damage. Anyone else in the path of the dash is knocked into the wall and killed.
Telegraphed Frostbite
Spawns red expanding
After spawning the AoEs, Ser Grinnaux gradually gains stacks of 
Area of Influence Up
Area of Influence Up
A knockback from Ser Grinnaux. Be aware that this ability has no cast bar.
Get close to Ser Grinnaux and aim yourself away from the Frostbite
Summons 1 Meteor Circle and 8 smaller Comet Circles.
You have about 30 seconds to destroy the Comet Circles and 53 seconds to destroy the Meteor Circle. If any Comet Circles are not destroyed in time, they will
The Meteor and Comet Circles become targetable.
Marks a player with a red marker, then drops 4 consecutive comets on their head, each dealing moderate damage to them and anyone nearby.
The damage cannot be avoided, but you should avoid stacking with other players so you don't hit them too. While one series of comets is rarely lethal, healers should still pay attention and top players off if they notice their health getting low.
A 270° arc that hits multiple times in a row. Each time the arc is bigger and farther from the origin of the attack.
Step into the 90° cone that is safe from the AoE, or step into an AoE explosion after it has gone off.
Marks a player with a red marker, then drops 4 consecutive comets on their head, each dealing moderate damage to them and anyone nearby.
The damage cannot be avoided, but you should avoid stacking with other players so you don't hit them too. While one series of comets is rarely lethal, healers should still pay attention and top players off if they notice their health getting low.
A 270° arc that hits multiple times in a row. Each time the arc is bigger and farther from the origin of the attack.
Step into the 90° cone that is safe from the AoE, or step into an AoE explosion after it has gone off.
A Comet Circle was not destroyed in time and its comet reached the ground. Deals high raidwide damage.
The Meteor Circle was not destroyed in time and its meteor reached the ground. Instantly kills all party members.
The enemy or enemies on the field become untargetable.
Deals minimal damage and inflicts a small knockback on all players 7 times.
Keep moving forward. Heal up after the last hit in preparation for
King Thordan buries you and your beliefs.
Does more damage if the limit break gauge is at 100, but can still be survived with sufficient mitigation, shields, or a tank limit break.
After his ultimate, King Thordan becomes targetable again and summons a giant dragon eye on the outside of the arena. Each time
King Thordan becomes targetable.
Applies 
Light of Ascalon
Ser Zephirin appears and prepares to use
Untelegraphed tankbuster on the main target.
A random healer receives a green marker. Shortly thereafter two knights charge at them, inflicting 
Down for the Count
Magic Vulnerability Up
Ser Zephirin throws an aetheric spear at the healer who is Down for the Count
This attack splits damage between all players hit, reducing damage to survivable levels. The first player hit takes drastically increased damage (about twice as much as everyone else) and is inflicted with 
Physical Vulnerability Up
Any player hit is inflicted with 
Infirmity
If any player (including the targeted healer) dies to this attack, Ser Zephirin immediately follows up with a maximum damage
All players (except the main tank, who will be busy dealing with a simultaneous Physical Vulnerability Up
Stomps the main target, dealing heavy damage.
Inflicts Hysteria
Anyone looking at the dragon eye on the outside of the arena is inflicted with Hysteria Vulnerability Up
Standard raidwide.
Applies 
Light of Ascalon
King Thordan summons his knights, who begin to execute a series of mechanics.
Starts off with a gaze from both King Thordan and the eye that must be avoided. Then, Ser Gerrique and Ser Hermenost appear: one casts
In this line, there are six "slots" for towers to appear. Outside (at the edge), middle, and inside on both sides.
Afterward, Ser Grinnaux appears in a random position on the edge of the arena and begins casting
Assign four players to handle towers (ideally all ranged players so the melees can keep attacking King Thordan) and an order in which to take them. Party finder usually does (from left to right) R1 H1 H2 R2. Be aware that it is not guaranteed for 2 towers to spawn for each side; it can also spawn 1 tower on one side and 3 towers on the other. Tower players should dodge
Afterward, quickly locate Ser Grinnaux and either move toward him or use knockback immunity. If you're a melee, prefer to take boss downtime over not being in the stack, as this mechanic is a frequent wipe point.
Inflicts Hysteria
Anyone looking at the dragon eye on the outside of the arena is inflicted with Hysteria Vulnerability Up
A 270° arc that hits multiple times in a row. Each time the arc is bigger and farther from the origin of the attack.
Step into the 90° cone that is safe from the AoE, or step into an AoE explosion after it has gone off.
A tower resolves, dealing minimal damage to anyone inside. If no one is inside, casts
Spawns red expanding
After spawning the AoEs, Ser Grinnaux gradually gains stacks of Area of Influence Up Area of Influence Up
A knockback from Ser Grinnaux. Be aware that this ability has no cast bar.
Get close to Ser Grinnaux and aim yourself away from the Frostbite
A telegraphed
Untelegraphed tankbuster on the main target.
Applies 
Light of Ascalon
King Thordan summons his knights, who begin to execute a series of mechanics.
Standard spread. Then, try to find the knight
Strikes all players with lightning.
Spread out to minimize damage.
A knight dashes across the arena, knocking anyone hit into the wall.
This attack is susceptible to knockback immunity effects, in which case it only inflicts Vulnerability Up
A player is marked with a blue dive marker. After a short time, a knight dives on them, dealing heavy damage to them and proximity damage to everyone else (relative to how close they were to the dived player).
Each dived player should get away from the party.
A knight tethers to a random player and, after some time, dashes towards them, dealing high damage. Anyone else in the path of the dash is knocked into the wall and killed.
A telegraphed
Stomps the main target, dealing heavy damage.
Untelegraphed tankbuster on the main target.
Applies 
Light of Ascalon
King Thordan summons his knights, who begin to execute a series of mechanics.
This includes Burning Chains
All attacks can be safely avoided by going to your clock spot once Burning Chains
Untelegraphed tankbuster on the main target.
Marks a player with a red marker, then drops 4 consecutive comets on their head, each dealing moderate damage to them and anyone nearby.
The damage cannot be avoided, but you should avoid stacking with other players so you don't hit them too. While one series of comets is rarely lethal, healers should still pay attention and top players off if they notice their health getting low.
Inflicts Hysteria
Anyone looking at the dragon eye on the outside of the arena is inflicted with Hysteria Vulnerability Up
Summons a series of fire
Move out of the AoEs as they appear.
A set of fire
Marks a player with a red marker, then drops 4 consecutive comets on their head, each dealing moderate damage to them and anyone nearby.
The damage cannot be avoided, but you should avoid stacking with other players so you don't hit them too. While one series of comets is rarely lethal, healers should still pay attention and top players off if they notice their health getting low.
A set of fire
A set of fire
Telegraphed Frostbite
A set of fire
Eight small avoidable cones appear wherever King Thordan is facing.
Move out or in-between the cones.
Standard raidwide.
Stomps the main target, dealing heavy damage.
Standard raidwide.
Applies 
Light of Ascalon
King Thordan summons his knights, who begin to execute a series of mechanics.
This phase serves as a "soft enrage": King Thordan and his knights will spam various raidwides that must be healed through.
If King Thordan is not killed in time,
Untelegraphed tankbuster on the main target.
Standard knight raidwide.
Untelegraphed tankbuster on the main target.
A knight dives onto a random party member, dealing moderate raidwide damage.
A knight dives onto a random party member, dealing moderate raidwide damage.
A knight dives onto a random party member, dealing moderate raidwide damage.
Ser Zephirin appears in the center of the arena, tethers himself to King Thordan, becomes targetable, and begins casting
It functions the same way as before, with Ser Zephirin needing to be reduced to at least 50% HP to reduce damage to survivable levels.
While Ser Zephirin is tethered to King Thordan, King Thordan is invulnerable.
Ser Charibert engulfs the arena in flames for heavy raidwide damage.
The knights call down lightning from the heavens for heavy raidwide damage.
Inflicts Hysteria
Anyone looking at the dragon eye on the outside of the arena is inflicted with Hysteria Vulnerability Up
Ser Zephirin casts
So, for instance, if you have 47,000 max HP and your tanks have 60,000 max HP, the attack will deal 120,000 damage to tanks and 94,000 damage to everyone else if you don't damage Ser Zephirin at all. This means that the attack becomes survivable after damaging Ser Zephirin to roughly 50% health with sufficient mitigation and/or shields.
Standard raidwide.
Stomps the main target, dealing heavy damage.
Untelegraphed tankbuster on the main target.
King Thordan casts one last Ancient Quaga, wiping the party.
A'rhaeda Vhil Charibert and Hermenost
Ser Charibert (a mage) and Ser Hermenost (a warrior) appear in the middle of the arena. Ser Charibert shackles each player with Burning Chains
Spiral Thrust
Three knights dash across the arena, knocking anyone hit into the wall. These knights will never spawn opposite one another.
The dashes themselves are susceptible to knockback immunity effects, in which case they only inflict Vulnerability Up
All Knights
Five knights appear in the middle of the arena.
Three of them cast a yellow tether to three random players and begin casting
Ser Grinnaux places AoEs underneath each player and begins casting
Meanwhile, all untethered players receive an ice marker, indicating they will be hit by Frostbite
Finally, Ser Grinnaux uses
Knights of the Round
King Thordan summons his knights, who begin to execute a series of mechanics.
Starts off with a gaze from both King Thordan and the eye that must be avoided. Then, Ser Gerrique and Ser Hermenost appear: one casts
In this line, there are six "slots" for towers to appear. Outside (at the edge), middle, and inside on both sides.
Afterward, Ser Grinnaux appears in a random position on the edge of the arena and begins casting
