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Efficient Construction's triggered ability resolves before the spell that caused it to trigger

Even though Unpredictable Cyclone replaces the card-draw part of cycling with a free spell from your deck, you're still technically cycling a card, which means you'll trigger cards like Astral Drift

BT10-109 U Option Reinforcement Plug-In O Color White Cost 2 Card Text 1 [Effect] While you have a Tamer in play, you may use this card without meeting its color requirements

Updated November 24, 2023, by Jess Cruz: As the Paradox Rift expansion got released, and it had more than enough time to settle in, almost every deck of the meta suffered a lot of changes

In terms of upwards potential, you could easily get this deck into Bracket Three without even needing to include any Game Changers