You're not locked in, either
The main appeal of the set is that Charizard makes their first appearance as a V and VMAX Pokemon card here, and if youre familiar with the Charizard tax, you know that it automatically spikes the price of the set and cards
There's no single 'best' booster because it depends entirely on whether you're drafting, collecting premium variants, or chasing specific Commander staples
I dont think this red spirit will see a lot of maindeck play, but it could end up pretty happily in sideboards
Other than featuring some beautiful art, Quakebringer rewards you for simply having it or another Giant on the battlefield
There's no advantage to building over the deck size minimum strategically in magic (there are in some other games) that offsets the downside to consistency of even one extra card