Phase 3:
As I run to the divet I move eos close enough that she can target the party as we run, but not close enough that she will be hit by dive bombs. Since I am on the main tank, I use eye for an eye and rouse during the spawn phase and proceed to keep him up using mostly physic. At this point I want to make sure I have some extra lustrate stacks during the next dive bombs phase in order to top the tank off while I move. Before the second dive bomb phase I also cast succor and drop a sacred soil if I have the stack, just in case someone doesn't get out of the way quickly enough. As the next adds spawn I run out, positioning eos off to the right of the tank and again heal normally. Before Twintania comes down I make sure to use eos' +healing buff followed by a rouse followed by eos' regeneration and a boosted succor. This will help reduce more of aetheric profusion's damage while also providing nice regen to move into the next phase of the fight.