This is the Gas build from AznvasionsPlays video on the [Kuva Seer]. The damage output was kinda nuts. Use with an [Empowered Quiver] build [Ivara] running Ensnare.

If you go for a riven go for Crit Damage > Status Chance > Heat = Toxin > Damage vs Corrupted = Damage vs Grineer > Multishot > Crit Chance > Damage vs Corpus
That priority order probably looks like nonsense so let me explain why it is the way it is.

1.) Crit Damage is first because Gas damage scales well off it and [Primed Target Cracker] is one of the easiest mods to replace in the build.
2.) Status Chance is so high in the list because even a 3 line no negative riven will hit 60% meaning we can swap [Scorch] or [Pistol Pestilence] for [Primed Heated Charge] for a big damage boost.
3.) Heat & Toxin are equal in power. Its just more damage, higher Gas weighting, and better Gas scaling.
4.) Faction damage is really good with DoT builds since it double dips, but its only good for one faction which is why I have Heat & Toxin above it despite being a bit weaker for damage.
5.) Multishot is more damage and Gas procs per shot. It is below factions because it doesn't change the fact we need to fire 2-3 times to max our Gas stacks.
6.) Crit Chance increases our odds to land Orange crits a little bit, but even a high roll won't add that much. This is a consolation prize, not a goal.
7.) Corpus already get absolutely fucked by this build to begin with. You really do not need to specialize even harder into destroying them.

Damage vs infested is not a good roll because infested are a pain to headshot making this build not exactly ideal, and they're made of wet paper anyway.

[Galvanized Shot] doesn't work on the explosion damage but it does work on the initial hit which is most of the damage, and it works on the Gas too for some reason.