Where the binomial distribution tells us the probability of getting a specific number of successes with replacement (i.e., equivalent with shuffling your deck, revealing the top card, noting whether its a land or not, then shuffling again and repeating), the hypergeometric distribution takes into account that card draws are, in fact, not independent (i.e., telling us the probability of getting a specific number of successes without replacement, where cards arent reinserted into the deck after being counted as a success or not)
This is a one-card army capable of turning the tide of any game in your favor
[11] In Japan, the packs feature art drawn by Mitsuhiro Arita, [12] while the English release has three possible packs, each depicting either Venusaur, Charizard, or Blastoise
In terms of Trainer cards, theres plenty of card drawing and a decent amount of Pokeballs too so in theory, you should be able to get hold of the Pokemon you need at any given time