A blank Catch Card
A Catch Card SP
Catch Cards are cards you collect in Super Paper Mario. They act as the Tattle Log of enemies, as opposed to Tippi actually using Tattle in battle. They give you info on enemies and other characters in the game. Specifically stats on HP and attack, as well as a short description.
Another thing they do is double the damage done to the enemy you have the card of. This all depends on how many cards you have of a particular enemy. 1 card equals 2x damage, 2 cards equal 4x damage, and so on. It is exponential based on how many cards you have.
Catch Cards can be bought or found blank or caught. Caught cards already have an enemy or character on it. Blank cards are items you carry and use on enemies to get their Catch Card. They have a chance of not working however. Catch Card SPs are usually more reliable, and catch the enemy more often than normal Catch Cards. It should be noted that bosses cannot be turned into cards.
There are 2 cards shops each on the first floor of Flipside and Flopside. The one in Flipside, Catch a Dream, sells Catch Cards for 20 coins and caught cards for 10 coins. The caught cards are random and not revealed until after you purchase them. The one in Flopside, Fondest Hopes, sells Catch Card SPs for 100 coins and caught cards at random prices. These cards are shown to you but they are expensive, usually at least 50 to 100 coins.
Character cards are useless in battle, and are simply there as collectibles. You can sell the cards to both shops for the same price. Rarer cards are sold and bought for more. The cards rarity system is as follows: Non-boss enemies are yellow with one star. Bosses and characters are silver with 2 stars. The rarest of enemies, Pixls, and important characters are gold with 3 stars.
There are a total of 256 Catch Cards total.