Pyromancer

Overview

Pyromancer is the Exotic catalyst perk for Dragon's Breath, the Solar rocket launcher from Season of the Wish. It passively refuels the Dragon Breath faster, and kills with the weapon sometimes make enemies drop Firesprites. The perk pairs with Composite Propellant, which ejects more fuel the longer the launcher goes without firing.

Unlocking

The catalyst comes from the quest "An Old Flame", started with Banshee-44 in the Tower. Its steps differ by source. One guide lists 50 Scorched targets and 5 bosses for the first step, and 200 Calibration Data for the second. Another says 100 kills of enemies affected by Scorch. The Calibration Data step is the slowest. One guide notes that the Season Pass Level 22 Catalyst Quest Boost reduces it to 50.