This is my take on the deck (older deck so haven’t updated it with new cards that I have)
EMP is very counter productive in a mech deck, but it work as a 7 mana, alternate board wipe, and straight up good card.
My take on S.I.L.V.E.R is that it is a terrible card that only works in a combo deck (IE: deceptib0t) or as a 7 mana combo with helm to create mechaz0r, but you generally want mechaz0r out much earlier than 7 mana. Its great when it works, and is a win-con in itself, but is removed easily if it doesn’t have immediate board impact. It does function as a 6 mana minion for trial, but I wouldn’t necessarily recommend it over more removal based 6 mana minions.
I will admit I’m a bit biased because I prefer finishing the trial over mechaz0r, but your deck has some pretty solid picks, and only needs some quick fine-tunes to smooth it out.
Your list looks a bit oriented towards mech synergies themselves, and playing a slower board oriented Zoo list instead of mechaz0r or Trial, which is absolutely not wrong and is flexible enough to drop out big threats, steamroll with trial, or just establish tempo and remove threats with Songhai positioning cards, but impacts mechaz0r and trial consistency.