Single or multiple color channels can have the incorrect ink consistency, have something obstruct the channel (like a splotch), or have the rubber rollers not properly cleaned between passes resulting in all sorts of neat misprints, which I cover in the beginners guide to misprints
Either way, afterward, that army has to go home and attack someone else
While we generally recommend going for your favourite Pokemon, here are the highlights of each pack: Best cards from each Booster Pack Mewtwo packs have Venusaur EX, Articuno EX, Mewtwo EX, Marowak EX, and Dragonite in terms of cards you can build competitive decks around
Plenty of fan-favorite characters - like Cloud and Sephiroth - appear in the game
They let you cycle for lands so cheaply that you can often play them instead of a basic land and treat them like a tap land that fixes your colors