Magic: Not Even Once
More recent sets also have lots of ways to make treasure tokens, which deal with your mana fixing problem early and give you lots of throwaway artifacts to sac to Breya in the mid to late game
Its a pure nostalgia play aimed at tapping into the brains of people who first got into the Pokmon trading card game as kids when it started, have probably since fallen off, and now have nieces, nephews, or kids of their own, and enough disposable income to be willing to spend money to relive their childhood glory days, or at least get back that beloved foil card they lost, traded away, or had stolen back in the 90s
Its a creature deck at heart and can easily run over tables with a wide board full of 5/5 creatures with flying, haste, first strike, vigilance, unblockable, and whatever other keywords you can jam in