Once per turn, if control of this face-up card with a counter(s) changes: Roll a six-sided die, remove as many counters from this card as possible, up to the result, and if all of this card's counters are removed by this effect, destroy this card, and if you do, take 2000 damage
Even that vacuum cleaner can't be taken out, but there's one more, so it's extremely difficult to take out
Buying the Cards The easiest way to buy cards is through what are called booster packs
But Oracle is far stronger
The item in question was a Team Rocket-themed pack: an expansion line from the early 2000s that featured cards inspired by the unscrupulous Pokmon-stealing organization from the video games and TV show (prepare for trouble...and make it double!)
From a design perspective, this sort of lock card is just another type of answer that keeps certain threats in line