Power Quickness Firebrand is going to be your alternative to 
Support Chronomancer for both 
Firebrigade and Hybrid compositions. Boasting moderate damage and consistent applications of 
Quickness, and 
Aegis, Power Quickness Firebrand can stay a competitive option for all skill levels.
This build is best paired with an 
Alacrigade, as you will not be able to replace a Support Chronomancer 1:1. While you will lose a Support Chronomancer's normal utility, you gain unique 
Firebrand utility via your Tome skills which can greatly aid a squad in high pressure situations.
Power Quickness Firebrand works great at bosses that favour power DPS classes. This build might see some use at 
Slothasor, 
Keep Construct, 
Samarog and Conjured Amalgamate.
Use once at the start and then use it everytime you gain a charge.
Use twice at the start and then use it everytime you gain a charge.
Use off cooldown.
Only enter on encounters with long phases or no phases. 
Epilogue Ashes of the Just should be used but is a DPS loss on the golem.
Firebrand Power Quickness 
Weapon Swap
Chapter 4 Scorched Aftermath