At the Mistlock Singularity
Extend boons with if you have time. Precast and take the singularity when your group is done pre-buffing. Additionally, you can precast a on the boss and take the singularity as well on bosses like Skorvald, or any boss if you use portals.
At the boss (spawnable bosses)
You can precast , and to squeeze out a little more burst, if your group coordinates.
At the boss (pre spawned bosses)
1. Omit this step if is precast
Swap to Greatsword from inventory
Swap to Focus and proceed with the regular rotation
If you want to be more self-sufficient in fractals you can get a 100% boon duration set and take
, cast all shatters, exit
, cast all shatters again and use
and take the singularity.
Alternatively you can also precast
to help with Alacrity