Celestriad
Kefka will start this mechanic by casting Celestriad, which will summon three fire, ice and lightning towers around him, totaling 9 towers. One tower of each element, and one random tower of a random element, will lit up, which needs to be soaked by two players each to stop it from detonating. This will happen three times, and while you're trying to soak the towers, Kefka will sneak in some attacks by casting either a chariot or a donut through Catastrophic Choice.
If your party fails to soak any of the towers, then the tower will explode, inflicting a damage down on your whole party and effectively preventing you from clearing. If the tower only contains one player, then the tower will kill said player, but the rest of the party is spared from receiving a damage down.
Figuring out whether its a chariot or donut isn't hard: Kefka will glow green if he's charging up a donut, while he will glow yellow if its a chariot. His attacks will appear on the 1st and 3rd set of towers, which forces you to stay either on the inner half of the tower or the outer half, where you're still at max melee range. The attacks are completely random, so you can see him use the same attack twice in a row: Don't be fooled into thinking that Kefka will do exactly one donut and one chariot!
So now the big question is: Who takes which tower? There are exactly four towers lighting up and the party must split themselves in a way so that each tower is occupied by two players. Luckily, there is a good priority system that the party can use, because when Kefka casted Celestriad, he also inflicted elemental vulnerabilities on your party.
You have an elemental vulnerability
Two fire, two ice and two lightning vulnerabilities will be distributed equally amongst the party, which will effectively create pairs of players who has the same debuff. If you are one of the six players who have received an elemental vulnerability, then your role is to find the tower set that matches your debuff and then rotate clockwise once to the next element.
| Find the towers matching your vulnerability! | Then, rotate clockwise once to the next element! | ||||
|---|---|---|---|---|---|
 | > |  | |||
Enter the tower as soon as you see one of them light up. If you see two towers of the same element lighting up, then you will take the first tower using the clockwise priority. Soaking a tower will inflict a vulnerability of said element, so that will effectively stop you from soaking the same element multiple times. So once you've soaked a tower, you will rotate to the next element set and do the same for the next set of towers until you've done this three times.
At the end of this mechanic, you will have soaked one of each element. The third tower that you soak will always be the same element as the vulnerability you started with, because the vulnerability that you started with will have expired at that point.
| Example 1 | Example 2 |
|---|---|
You do not have any vulnerabilities
Out of the eight players, two random players will end up with no elemental vulnerability whatsoever. As you might have noticed, one of the element tower groups will randomly have two towers light up instead of only one. This pair will be tasked with the responsibility of going after the extra tower that lights up under the same element group.
The extra tower will always be one of each element throughout this mechanic, but the order in which the extra tower appears is completely random. Because of that, you cannot blindly rotate clockwise like how the other groups in your party are doing, you must pay attention and use your eyes for this mechanic.
Upon identifying the element group that has two towers that are lit up, your responsibility here is to soak the 2nd tower using clockwise priority or the first tower using the counterclockwise priority. While looking straight at the towers, you will always take the rightmost tower that you can see in front of you.
| Example 1 | Example 2 | Example 3 |
|---|---|---|
Ultimate Repeater and another set of Fell Forces
Upon entering the third tower in Celestriad, which is also the burst timing for your 2 minutes, you are to press your 90s mitigations if possible. Kefka will soon cast Ultima Repeater, which is the same raidwide you've seen at the start of this fight. You want to press your mitigations early, so that it covers this raidwide while also allowing you to use it earlier during the last phase of this fight.
Two sets of Fell Forces will soon follow, so immediately get to your role stack positions to safely soak these auto attacks. As tanks, you should be able to deal with this set of auto attacks by using your secondary and your short mitigation together. This works mainly because there are still lingering mits that were used to mitigate the earlier raidwide, but as a precaution, the healers should assist their tanks whenever possible.