You can take a creature with just two counters on it to four, putting it above what your opponent would consider to be fair trade when you move to combat, leaving them with not many choices on what to do
Aragorn, the Uniter Folks seem meh on Aragorn, the Uniter, but this is going to combo kill a lot of people with 4-color storm
Errors and Misprints : Manufacturing errors and printing mistakes can create exceptionally rare cards that collectors are willing to pay a premium for
Once per turn, when your opponent activates a monster effect on the field (except during the Damage Step): You can excavate the top 5 cards of your Deck, then if you excavated a "GMX" card(s), negate that activated effect, also place all the excavated cards on the top or bottom of the Deck in any order
What file formats and sizes are included
The Pokemon TCG hit a winning formula with many of their incredibly beautiful (and valuable) Sun & Moon era sets