In most situations, protecting Contain!, and Extinguish is the most important, as the two cards can shut down your opponent's plays.
I Side Deck for Quickdraw, too. Well look at more Quickdraw Decks later this weekend once we see which ones stand out from the crowd, but for now, Elickers Yusei-themed Deck is a very cool entry into the tournament
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Nekroz Kaleidoscope could also use Extra Deck monster as Ritual Material, which would then trigger Herald of the Arc Light and search for another Ritual card
Look forward to more information (coming soon)
If you liked the ideas of the Gadgets but didnt want to pair that with the Machina, might I suggest taking a look at building other Gadget variants such as Gadget-Cubics or Gadget-Kaiju they each build upon old ideas of how to best use the Gadget monsters, bringing them into the modern era with a bit of love