What should be an enticing perk is neither visually interesting or effective. Enemies have to practically be stacked atop one another to see any collateral effect and even then it's only a threat to the lowliest of trash mobs.
And let's look at appearances beyond that. It looks like a very cheap lens flare texture that appears for a couple of frames! You can't tell if it is proccing or not!
Please improve upon this trait, Bungie. Firefly was one of the most revered perks in Destiny 1 and it deserves a worthier successor than this.
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It is really bad, nothing comparable to Firefly from D1, just a visual explosion.