Morse did it first.
after that the build was made by RAIZQT (8 months ago)
) and myself (https://www.pathofexile.com/forum/view-thread/1127263
) had the build up and working right after 1.3 release 9 months ago in mid-December.
The current iteration is an immense improvement over all the 1.3 versions, and dariidar's build looks to be the best in 2.x. Figuring out the aspd breakpoint was a major discovery, figuring out how their hp worked was extremely important (for the MI clonebombing, though nerfed shortly afterward), as was getting comfortable with EE and nailing down the correct tree out of lots of options.
Hell, just figuring what all supporting skills to use was a battle all by itself. Being a summoner, there's about 28490284 options and only 8 open sockets (+2 from unsets) after you dedicate bow and body to summoning and one 4L to auras.
The one thing that I've yet to see is someone take this concept into physical scaling instead of flat elemental scaling. It's theoretically even stronger than what the BotW shows, and it starts outscaling flat elemental with base physical not much higher than Lioneye's Glare (granted, you need to account for accuracy).
I totally agree with the start of Raiz's video though: it is one of if not the
most complex builds in the game right now.
If you were helped, please pay it forward.
Fun is not a winner-takes-all game.