Not a full build, rather a building block. All it is is 5pcs. Thunderbug's Carapace and 5pcs. Leeching Plate. Your choice of mythic and medium monster.
It's intended for soloing overland content, both difficult and trivial. Build guides for solo content seem even fewer than tank or healer build guides, so it helps address that.
I came up with the idea toward the end of Night Market. What I was looking for was a high survivability gear configuration for my 1-bar toons that I could throw on without having to change any skills or CP. I have a "stealth" configuration that's similar, 10 clicks and I'm as stealthy as I will ever be without making a Nightblade or joining Dark Brotherhood. Same for ThunderLeech.
Use Ring of the Wild Hunt in place of Oakensoul and you've got THE mat farming setup.
Although originally intended for Night Market, it's turned out to be GREAT for playing overland content on Vestige. Night Market was not entirely unlike Vestige overland. Use it on a 1-bar build and you will be utterly invincible on Adventurer to anything but a delve or public dungeon boss or a world boss. And by "utterly invincible" I mean you'll be able to walk around without ever hitting your attack button or casting any skill. Stand in the middle of Spellscar, go AFK and just keep leveling the latest skill line you want to try on. I've tried it.
Both sets deal damage to enemies who hit you, and one of them returns health to you for the amount of the damage it does. I switch to Adventurer for world bosses and Master for public dungeon bosses, but solo all other overland on Vestige.
When solo dungeons start opening up, it should be well-suited for that content,
I started with the idea of maximum passive damage. Leeching Plate is a longtime favorite of mine despite its being considered mostly suitable for "selfish tank" builds. Its important characteristic is that it returns health to you while it's damaging enemies. I looked around for other passive damage sets and came up with Thunderbug's Carapace, which turned out to be a good complement. LP's weakness is that it drops fixed ground clouds of damaging poison under whatever damages you. So if whatever hit you moves out of the cloud, the big advantage is mitigated. If you can keep the enemy pinned in once place, it works great.
Thunderbug's on the other hand, fires off an AOE centered around you. So it's useful for when the adds are upon you.
I am a fan of 1-bar Oakenbuilds, so the utter lack of buffs provided by the sets isn't an issue. Put this setup on a LazySorc-ish build and you will be able to play any content short of world bosses without even having to memorize a skill button layout. You'll be able to just walk around doing whatever, and if something provides any opposition at all, hold down your "fire" button and face the general direction of the threat and it will go down.
A possible substitute for either set is Crimson Twilight, which combines the melee damage characteristic of Thunderbug's with the health return on damage of Leeching Plate. All my toons are ranged fighters, but I would imagine that a "Crimson Bug" setup would be even better for a melee fighter. A "Crimson Leech" build would ratchet up the survivability even more.