If you think a card might be worth grading, sleeve it once and leave it alone
Numbers-wise, Pokemon is far and away the largest and most lucrative media franchise of all time, beating out titans like Star Wars, Marvel, and Harry Potter
Also, you have good resources to avoid getting hit and heal your Pokemon a bit , thanks to Radiant Alakazam, Boss Orders, Escape Rope, and Switch
add 1 Pendulum Monster with 2500 ATK and a different name, from your Deck to your hand
If a Pendulum card you control is destroyed, you can detach 1 Xyz material: Destroy 1 card on the field, then Special Summon 1 "Pendolium Token" (Rock-Type/EARTH/Level 1/ATK 0/DEF 0) on your opponent's side of the field
Finally, remember the importance of community in collecting - only take what you need