You can keep doing it until you have a Basic Pokemon card in your hand, but your opponent will draw one extra card for every mulligan you take
For a simple example of a nonbo, your Torpor Orb deck shouldnt rely on Reclamation Sage and Solitude for removal, just as a Storm deck shouldnt play Trinisphere
However, it causes the opponent to show a random card from his hand and must return it to the deck
Prices move with demand, print runs, and the calendar
It doesnt play fair, it plays fast
I am a grown adult now who can do responsible grown adult things like buy a booster box whenever the mood to dive into the physical TCG strikes me, and there are, of course, ways to open more in Pocket , by buying stacks of game currencies that you otherwise grind out doing daily missions or by leveling up through collection and battling