There is no special Pokmon or Nintendo license required to resell genuine, factory-sealed cards
Notably, they can't try to remove creatures you control with power 2 or less to force you to discard
Check for extra symbols or words after the name: Cards/Pokemon released before HeartGold SoulSilver display the Pokmon level after the name in the top right , such as "Pikachu LV.12." Some Pokemon have special symbols in its stead these tend to be worth more and again, are worth investigating
Stare down up to one target creature until end of turn
Just like with LotR, players can really feel the world of Final Fantasy when they look at, or play with, the cards from Final Fantasy
Crushing Lava 40+ You may discard a Fire or Fighting basic Energy card attached to Magcargo