Admittedly, now is a tough time to start collecting the Pokmon TCG, but if you're keen to get some retail-priced booster packs and other products, there are a few tricks that may make your life a little easier
Then if you cast Eris as your first card and then get a second spell off, you will get both the Eris and Shiko and Narset triggers
I've not spent a penny on TCG Pocket, and never plan to, aside from redeeming and, I promise my deeply forgetful self, cancelling the free two-week trial of the premium subscription down the line
Keep in mind, you should only vote for more than one card if you personally view both as equally iconic
It does not guarantee the card cannot fall, but it means new supply is expensive to create
Vintage cards are accepted in a much wider range of conditions