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4vj 4vj 4vj 4vj 4vj 4vj 71u 71u 71u 77i 77i 7js 7js 7js 7js 7js 7q9 7q9 7q9 7q9 7q9 7q9 7tc 7u2 7u2 7u2 7u2 7u2 7u2 809 8pt
(I though it might have needed a new thread by itself, if not, do what you want with this)
This is my personal build of Zen, I tweaked around a lot and this found to be the best for me.
It has the best winrate against AI4, their decks are easy to predict and you can easily guess whether or not you should be keeping your SoVs until you draw a PA and they being generally slow means that you have time to setup your field. However, games are long, and if you get an EM it's a 100 HPs one, meaning 80 electrums in about 20 turns or something around that. Given that most of AI4's money comes from selling cards from spins, this deck probably would have a better UEI in Gold.
If you're aiming to the Electrums, Gold is most likely your best pick, there aren't many Purifies around (not as many as in Plat) and the rewards for an EM are neat.
Platinum, instead, is probably the best for rare-farming: gold's WR is not enough to consistently win 3 games in a row and paired with the high TTW it means you won't get enough there. Platinum however only needs two wins in a row and, even though there are quite a bit of Purifies running, this deck isn't as susceptible to them as PDials is.
What this deck greatly suffers is Stone Skin and SoD, but they're doable. Pest, instead, most of the times means instakill.
A build with Quantum Towers and SoDs may be done but would be, IMHO, inconsistent, expecially if compared to this.