Banks suggestion combines all the above - the discovery (packs), the acquisition of nice cards to buffer the collection, the sentimentality, and the practical needs met
You can get cards in a language different from yours if you use Wonder Pick or Trade cards with other players in Pokemon Trading Card Game Pocket (PTCG Pocket)
I do just also want to take a moment to say thank you for continuing to attribute a lot of the credit to me on the list, its much appreciated X) Perhaps someday in the not too distant future there will be a website that serves as a Pokemon TCG Database, and we wont have to do as much searching for all the cards info
But heres the thingchoosing a Pokmon theme makes everything easier
You could Brainstorm two lands and then ramp them
Along the way there are various ways to make tokens, including via Caesar, Legion's Emperor themself on attack