Like most Pokmon cards, the value of Nidoran depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Dragon Frontiers)
I pop out of the car, mask on face, wondering what this guy must think of me
But having to commit to casting a four-drop every turn can tie up a lot of mana, so you need to be smart about your plays and maximize your attacks
Did you note that the decision to destroy an artifact isn't yours to make
While I would strongly discourage you from supporting people making counterfeit cards (which are often marketed as "proxies" even though their main goal is to replicate an authentic card so that it can be mistaken for the real thing), there are plenty of sweet non-counterfeit proxies available these days and it's easy enough to make your own proxies with your home printer or a Sharpie
However, if we missed one of your favorites, let us know in the comments below