443507
Every 220197 in the dungeon will periodically cast 443507 that will deal heavy over time damage to the whole group. Getting caught off-guard by it could be very dangerous so it's important that you see the cast coming and prepare for it. Depending on your stats and key level db could not be enough to handle it and you might need to commit more cooldowns to it.
As common with these types of aoe effects, the real danger comes in the form of overlaps. Other mobs along side the 220197 can usually cast things like 443427 and getting hit by it while already low from 443507 can very easily turn into a death. Keeping an eye out for potential targets so you can interrupt key casts with quell when these overlaps would happen is very important to keeping people alive
216320
There are two important damage events on this fight: 447146 and 441395. 447146 will come every 35 seconds, dealing heavy damage and knocking everyone back. The knock back means its not possible to pre-cast a sb to heal the damage and also you run the risk of being pushed out of range of the group and so you can heavily rely on lb to deal with this. 441395 is a way bigger damage event and will happen 50 seconds into the fight and then approximately every 1:20 after that. Depending on key level and the dps of your group you need to plan for two or three of these as the 3rd 441395 happens at 3:30 which isn't an unrealistic combat time for a high level boss
Keeping db and echoed db on the group during the 441395 and also using either rewind or lb ec is a good way to deal with the damage but the cooldowns are long enough that you probably won't be able to use them twice during the fight unless it gets unreasonably long. The same way zephyr and stasis won't be up for the following 441395 after you use it on one. It's a very good idea to have a cd plan when going into it and remember that while damage from 447146 is scary, as long as people are decently topped up before it they aren't likely to die to it, and you don't really need to use heavy healing cooldowns right after the knock back.
If you plan for the boss to die before the 3rd 441395 you can freely use rewind and stasis for one and lb ec and zephyr for the other and this should get you through them no problem, but will also depend on you healing through every 447146 with only your empowers and ve.
The boss also does a tank smash in the form of 461842 that comes 5 seconds into the fight and then right after every 441395. Because the time between 441395s is 1:20 and td only has a minute cooldown it's a good plan to td your tank right after 441395 to smooth out this hit.
216658
216658 works on a one minute cycle through the abilities, and it works like this:
- The first cast is 439401, which will summon the three orbs you have to dodge around the boss
- Five seconds later, the boss casts 439341. This is the most important damage intake of the fight and were all your attention should go
- Five seconds after the 439341, the boss will cast either 438860 or 437700. Both of these do heavy damage to the whole group and so you need people to already be healed up to full from the 439341 damage
- 20 seconds after the first 439341 it is cast again, followed by whichever one of 438860 or 437700 the boss hasn't used yet
- 15 seconds after this 2nd aoe hit the tank gets hit by 439646 which will deal heavy damage
- Finally, 10 seconds after the tank hit the boss once again summons the orbs with 439401 and the cycle starts again. This is exactly one minute away from the first orb spawn
When you look at it this way, the boss becomes very simple. During the one minute cycle you have to heal 439341 twice and have the party at full hp before they get hit by 438860 or 437700, and then you can use td on the tank to help with 439646. That is basically it
sb will cooldown in at most 19 seconds which means if you use it to heal the first 439341 it will always be up for the 2nd one of the cycle. db won't be up like this unless you use it a bit before and get good imatrix rng so you can only really depend on having it for one of the two. You can supplement the 439341 that doesn't get db with lb or stasis, and remember that zephyr is a good tool to help with 437700.