A single target fight. Note that as Night Fae you can use Shifting Power while hiding behind the pillars for maximum uptime.
Huntsman AltimorSingle Target / Cleave
Sun King's SalvationCleave
Artificer Xy'moxSingle Target
Hungering DestroyerSingle Target
Lady Inerva DarkveinSingle Target / Cleave
Nothing special to really add here, focus on the boss and use Combustion when the adds spawn, making sure you spread Ignite to them.
The Council of BloodSingle Target
Don't bother with Ignite spreading and cleaving here as the health of the bosses reset. Just focus on your assigned target.
A single target fight. Make sure your second combusts aligns with the boss's damage amplification (Destructive Impact).
Stone Legion GeneralsCleave
Use Flamestrike if add damage is required. Otherwise, focus the boss and spread your Ignite.
Sire DenathriusSingle Target / Cleave
Nothing special to do as a fire mage here, just focus the boss and spread your Ignite to the adds.