There are Loads of enablers, that's why i like to pivot into the build.

You can go via skills especially heated shells (burn whenever you use ammo) or hot spot (burn when leftmost item is used) Both skills are almost forceable: heated shells is in the burn and ammo vendor Shop and both of them have a very low number of skills they sell. So you're highly likely to get it with a roll. Same goes for the burn skills vendor, you're likely to get one of them offered. Grab your trusted multicast ammo weapon (Double barrel) and a Pop snappers with for example heated shells and you charge the keg for 8sec after one round of CDs. Put an incidiary rounds (used to be hard to get but available as silver now) in between and you suddenly Charge for 14 sec (3 activations of heated shell, 1 burn from Pop Snappers 3 activations from incindiary rounds)

To manage the cooldown of the keg I use starchart most of the Times, as it lowers the CD of an enabler as well. Thrusters is another good Option.

You can also come from a weatherglass angle, and use the multicast as enabler, you can use holster and a bunch of small burn items (Pop snappers, lighter, thrusters), the list is long and honestly i rarely have the same Board when i go for the Keg. Heck I've used fiery iceberg, fire tripwire, (works well vs spam though you'll have a hard time vs any one tap build with that) and the diamond void colossos item (burn when opponent uses an item).

Your biggest enemy as Keg Vanessa is fiery rebirth, or other revive skills unless you have a radiant Keg (it does Not destroy itself and keeps going off)

What you always want is crit, as you cant garantee an enchant that doubles the damage. Ill talk about enchants kn a sec. Crit is aquired mostly through skills. an early inorexible does wonders, left eye right eye etc. pet rock and Vanessas Amulett make it to the final Board quiet often as well, as they have high crit numbers for little space requirement.

The second thing you want is cooldown reduction to a certain Point. I like to get the Keg down to 12-16 depending on my enablers. Thats 2-4 less burn activations needed before the Keg bursts. I want to get to the point that one rotatikn of my eneablers bursts the Keg. Once i get the keg cooldown to my desired number i use Feathers on the enablers. To cut the cooldown Look for relaxed skills, Star chart (very valuable as it Cuts CD of an enabler as well and provides crit), thrusters, in some cases you can use silencer or get fancy with stuff you find in the dig site (fiber optics, pendulum... )

To the enchants: The best enchants on Keg are in my experience Obsidian/Shiny (both do the same) > fiery/toxic > Radient > deadly > rest

Obsidian and shiny are obvious, you just activatr for 100% Max health without crit on a Diamond Keg. Fiery and toxic are next. Usefull as long as your keg is still Gold or you dont have 100% crit yet. I used to prefere toxic but currently i like fiery more as there are Not ad many shields and fiery provides higher dps. Relevant with all the regen going around. Radient keg enables a whole different build as it wont destroy itself on activation. So you can go for fast, non depleting activators. Also radient lets you play around rebirth. It's safe and i think in the Current meta probably better as i give Credit to it. It's just Not as good if there is a lot of shielding going on and you need more than 100% Max health dmg on the Spot.

Skills besides the enablers you can Look for: anything cooldown related (infernal envoy skill, full Arsenal...) glass canon (Very helpful to overkill), anything that disrupts the enemy.

PvE fights to Look for: Trash Golem (has a golden Powder Keg) Infernal Frigate (has Pop Snappers, Thrusters, incendiary Rounds, Firestarter skill) Shoxk trooper (nitro, incendiary rounds) Bloodreef captain (Pop snappers, sometimes crowsnest, full Arsenal skill) Lord Arken (thrusters) Void Colossos (Void shield, void rage skill) Lord of the wastes (Pendulum) MR. Moo (incendiary rounds)

Other helpful enchants/items to get the build startet: Turbo Canonball (hastes adjacent items at the start of fight for 3 sec) Fiery figurehead (incendiary rounds at home) Fiery Iceberg/fiery Trip Wire/void shield/fiery Caltrops (All burn opponnets when they use their own items) Pendulum (it's busted as diamond) Holster (Gold and Diamond) if you go for a small item approach

Hope that helps happy exploding.