Unless you're talking about the valuable cards from the original base set, each Pokemon Generation's first TCG set, their base set, usually features a slow start to the generation
For example, if you control an Omnath, Locus of Creation and make a nonlegendary copy of it with Irenicus's Vile Duplication, you can use regular copy effects on the new token to skirt the legend rule
Run an artifact-heavy deck with many destruction and mill spells to get the most triggers
Create a token thats a copy of target creature you control
We may have a bunch of fancy new Energy cards being released, but Aetherworks Marvel remains the best MTG Energy payoff
This might seem like a huge flaw, but you will find that it benefits you