One player has conducted an experiment involving 10,000 trial simulations, posting their findings to Reddit, and found that collecting every card of one to four-diamond rarity would require a player to open, on mean average, 1,536 packs, with a 99 percent probability that the last needed card would be obtained between the 1,437th to 1,640th pack opened
After doing so, you can look at the opponent's hand, then discard one card you choose
Effects that interact with this zone (and not the Command Zone as well, ala Drannith Magistrate) arent exactly commonplace, though they do exist
For The Same Exact Solgaleo GX But Gold Edition Click Here Solgaleo GX - - HP 250 Type: Stage 2 Ability Shining Mane Your Pokmon in play have no Weakness
There are few effects more potent than simply telling an opponent "no" when they go to cast a game-altering spell