Anyone sharing information on the Challenge mode version?
Been meaning to do this. Nice info Cheesy. You have first post credit as well.
Easy Mode:
Casts an uncurable Elemental on a member of the raid, they need to move away from everyone else until gone. If they don't move, it spreads, if it spreads 4x, its a wipe.
Name - Arc Lightning
Regex for GC/RH etc. - Overlord Talan's Arc Lightning (critically )?hits (?!YOU)(?<name>[A-Za-z]+)
ACT Trigger - <Trigger R="Arc Lightning hits YOU" SD="GET OUT GET OUT GET OUT" ST="3" CR="F" C="Siren's Grotto: Dissension" T="F" TN="" Ta="F" />
Casts uncurable Noxious on members of the raid, must use the clicky item (a venemous spine - Dropped from Trash) to remove it.
Act Trigger - <Trigger R="Necrotic Venom hits YOU" SD="Use spine" ST="3" CR="F" C="Siren's Grotto: Dissension" T="F" TN="" Ta="F" />
Pops a Doppleganger on a timed basis - Needs to be Offtanked Within 25m of the named. If it goes further than 25m from the named, both named + Doppleganger gain a fail buff. Doppleganger will despawn after a while, and they will equalise health. Doppleganger will memwipe, but doesn't need to be dps'ed. Have a tank face it towards the raid so they have more time/room to snap it back.
Both Named and Doppleganer require dispells
Named levels up on Deaths, and also levels up throughout the course of the fight on a % base. Minimising Deaths is essential to completing the fight.
Named has a noxious AE that doesn't really hit that hard. Its pretty much a case of ignoring it and just curing it as normal.
AE Name - Toxic Infusion - Noxious - Roughly 18s Recast.
Named also has the usual Tank Increments buff. Swapping tanks between each Doppleganger seemed easiest way to deal with this.
Throughout the fight, a static add will pop (a psionic summoner) on the square directly infront of the nameds original spawn point. This add does nothing but cast 1 spell, which is a DPS check. You must kill the add before the spell finishes casting. Its about 30s to kill it.
There is also a random extra add (a psionic guardian) which must just be killed when you have time. Doesn't do anything special. Can be killed after Summoner.
Basics of fight:
Don't Die.
Don't spread the Elemental
Use the Noxious Item when needed
Burn the Summoner ASAP
Burn the named in between.
Approx Hit Points - We did 2.5 Billion damage to it over a 9 minute fight. Its health will depend on how many times it gets to equalise through the fight.