IMPORTANT: This is a THEORETICAL build for a gas damage [Nataruk] to be used with [Thermal Transfer] subsumed onto your Warframe

So what can I expect to see from the build?

Once fully stacked, it should be able to oneshot anything in base SP with ease. It shouldn't be so fussed with corpus enemies since they die immediately to the base damage, and infested are a joke to pretty much anything. With grouping abilities, you can create a massive kill zone where anything that enters is instantly deleted to 10+ gas clouds concentrated in a 2m radius. This build is great for holding corridors and/or open areas where your grouping ability can have maximum effect. Compared to (The Gassed [Nataruk]), the most upvoted gas [Nataruk] build, this build only falls behind in 70k sustained dps as A STANDALONE BUILD before [Thermal Transfer] is applied, effectively making the sustained dps MUCH higher. That build is linked below.

https://overframe.gg/build/278823/nataruk/the-gassed-nataruk-config-a/

Possible FAQ

How does this build work?

A: [Thermal Transfer] applies elementals to your weapons as if they were mods. Spawning a cold zone will make your build into a viral [Nataruk], then spawning a heat zone will override the cold zone and create a gas + cold [Nataruk] build. You can prime enemies with the viral weapon first as the build lacks initial damage to build stacks for deadhead. Cold elemental after the override is a nice addition as it not only slows, but deals bonus damage to proto shields and alloy armour (the type that's used by bombards and bursas). I recognize that the cold weighting is on the higher end for the build to actually maximise dps for gas. As such, consider leaving [Thermal Transfer] at rank 3 or 4 so that you can tap the zone, leave the area, and have a set duration of 20 ish seconds for priming before you hit [Thermal Transfer] again for pure gas elemental. If this is the case, consider dropping [Primed Shred] also in favour of slotting arcane acceleration (r5 since it doesn't double for bows) on your warframe and putting [Continuous Misery] in the leftover mod slot instead.

Why not [Hunter Munitions]?

A: If you wanted an optimal build, then you wouldn't be here. Just slap on viral and [Hunter Munitions] and go play boom'n'zoom somewhere else. That being said, this build should more than suffice in steel path (will get out-performed by viral slash after some time, but hey, what'd you expect), but NOT endurance. In addition, this build solves the problem of viral slash builds feeling horrible on the off chance you don't hit the slash proc, as well as having the added bonus of visual ASMR :)

Why is [Galvanized Aptitude] on the build? I thought [Nataruk] was an AoE weapon?

A: [Galvanized Aptitude], or Gun CO, is slotted here as [Nataruk] is not considered to be an AoE weapon for the mod and actually makes use of eclipse scaling. The reason it feels like it's AoE is because the arrow's projectile hitbox physically expands into a small sphere, and all objects/enemies struck by that sphere are considered to be taking direct damage from the weapon. This direct damage increase will also increase the damage of gas procs since Gun CO modifies base damage.

Why Deadhead and [Galvanized Scope]? I thought the projectile would make it harder to land headshots?

A: Aiming slightly above the head should do the trick. Remember this weapon is not an [Arca Plasmor], and can actually make use of range so you don't have to aim at a ridiculously high angle. Other than that, the gas procs from this weapon can also headshot the enemy and should be able to keep scope and deadhead active for the entire mission once they are fully stacked.

Isn't [Hammer Shot] a troll mod? I thought it was really bad!
Hammer shot is slotted here to make up for the lack of status that we would've gotten for slotting a heat 60/60 elemental. However, since that's been offloaded to [Thermal Transfer], we need a bit more status to reliably hit our gas procs.

Do I need to use a bane?

A: Short answer; yes. Long Answer; very much so. Gas doesn't scale with elemental mods and Stealth Gas has long been left in a grave 6 feet in the ground of warframe's spaghetti code. Its only saving grace is its ability to headshot and remain static on the battlefield for the full duration of the status, unlike electricity which can headshot but does NOT linger. However, it is still a DoT and will double-dip on the bane scalings in addition to headshot scalings, which can lead to some pretty hilariously big multipliers. Dropping the bane will see a very significant loss of dps.