O aetherstacks but everyone is alive. your aetherflow is still on CD.

But after this the boss is going to do Charybdis (everyone to 1 hp) followed by Twinbolt on the 2 tanks. You pop Fey Covenant and FEY Illumination out of instinct.

all your pet abilities are down. Whispering Dawn is still ticking on the raid however but this won't be enough for the upcoming Twinbolt. fey illum and covenant buffs are still also up.

You pop Dissipation dismissing the pet and giving you 3 aether stacks. one goes to the Mt with Excogitation. You swiftcast a dissipated largessed adlo on the offtank then deploy it. you have 2 stacks of aetherflow left and you use one on the offtank which leaves you with am extra aether after Twinbolt is cast. raid is alive and everyone is alive.

after this mechanic is sort of a transition phase where not a lot of damage goes out which gives you ample time to harder your pet back after dissipation ends.