The Wind CrystalThe Wind Crystal's activated ability is absolutely absurd, and allows this to not only fit into any life gain deck, but any style of beatdown deck in general
Evolve first partner Snivy all the way to Serperior ex, and discover the inspiring power of ideals with the region's Legendary and Mythical Pokmon, including Zekrom ex and Meloetta ex
This is to say that, despite the cost that each draw minimally impacts the composition of the rest of the deck, this deck probably has better mana than a 60-card deck with one less color (Im not sure how problematic needing to fetch four colors instead of three will actually be to how games play out)
That dynamic, an early premium that settles as print supply lands, has repeated across most sets in the era, which is the single most useful pattern for timing a purchase
Its a combat-centric deck focused on attack triggers, ways to grow your creatures in combat, and a few tricks to protect yourself from sweepers