I've updated the Rare re-rolling bit as I didn't like how I worded it at first.
RARE Re-Rolling
You can re-roll
3 Rare cards you've held for 1 week to be given
3 Rare options, from either Rare deck 1 or 2 (you can choose which you'd like). You can choose
1 of the 3 options.
Also, a lot of card information can be found in the Card Guide thread, here:
https://kpopsource.com/threads/a-complete-guide-to-the-trading-card-game.60653/
I have a link to it in my sig and it's on the homepage (one of the banners).