If you get 1-14, you get to create a copy of that Creature thats tapped and attacking, but you exile it at the end of combat
Promo Cards are also generally (but not always) marked by a stamp of some sort on the right side of the image, as seen on the picture of Mankey above
Emperor Maju Garzett, while usually not able to have as ridiculous of an ATK stat as Legendary Maju Garzett and lacking the piercing damage, prevents the opponent from using any cards or effect during the battle phase, meaning it can attack freely without worry of being disrupted
The con is that six wildcards is a pretty small number, plus it takes a long time to fill the vault unless you buy packs like crazy
On top of all that, what makes Pin Baller all the more frightening is if your Life Points are lower than your opponents, then your opponent cannot Negate the effect to equip with an imperm or a Baronne
Similar a los objetos en el juego, solo puedes equipar una carta Tool en cada carta Pokmon que tengas en el campo