Keeping it simple, each Pokmon that you play is a specific type, has a set amount of hitpoints, and has different types of moves that it can use
Now, I dont have a lot of PSA cards but I have a lot that do plan on (eventually) getting graded and think I have a pretty good grasp of what cards have the potential to get
Instant Color tag templates(None) Fresh Meat Create a 3/3 green Beast creature token for each creature put into your graveyard from the battlefield this turn
X SPELL Quick-Play If you control a "Gate Guardian" monster: Target 1 card on the field
Theres nothing smart about timing the market or when to buy these cards so long as you have the money it takes to buy them, their value always tends to go up over time
They lose all of their mana rocks, engines, and finishers, then proceed to lose the game