From Destinypedia, the Destiny wiki
Dragon's Breath is an exotic rocket launcher introduced in The Dark Below. Dragon's Breath fires unique rockets that leave behind a solar flare grenade, making it a good area-denial weapon. After an update with The Taken King, the weapon's exotic perk was changed to Napalm, in which after the weapon is fired, a Solar damage napalm canister is dropped and detonated, causing additional damage over time.
The main perks are Tripod and Pyromancer. This meant that Dragon's Breath could carry three rockets in the chamber, each of which left behind a solar flare upon detonation.
Dragon's Breath was totally revamped. Its exotic perk is now "Napalm", which allows the user to hold down the trigger to delay the rocket's detonation until the trigger was released, thus detonating the rocket and dropping a napalm canister, which leaves a huge swath of fire that excels at crowd control, area denial, and damage over time.
List of appearances