You can find non-foil versions of all the cards from the Through the Ages bonus sheet in Final Fantasy Play boosters and Collector boosters
Yata-Garasu is the main card in the infamous Yata-Lock strategy
Meanwhile, Ethans Typhlosion ex introduces a rare one-prize attacker that can deliver late-game knockouts with minimal energy, positioning it as a potential tech piece against slower decks
Another good candidate for our flattening kit
Because you're transforming an existing creature into Archfiend of the Dross, the opponent's Archfiend doesn't enter the battlefield, so it doesn't get any oil counters
Tie it in with Doubling Season and your go-wide strategy can be, uh, wider than ever, creating four tokens when it enters, and then duplicating more when it attacks