Scratch

When you select Scratch you will be brought to this page. The text above the Scratch selections will have stuff about the current scratches, the rares, and whatnot. And if there's any events for certain draws.

Friend Scratch - To perform a friend scratch you will need friend points. To scratch 1 you need 200 friend points. To scratch all 9(the whole card) you need 1800 friend points. The units you tend to get from this are 1☆ or higher. For obvious reasons it's harder to find rare units in this scratch.

Rare Scratch - To perform a rare scratch you will need Cash Coins. To scratch 1 you will need 5 Cash Coins. To scratch the whole board(9 squares) you need 45 Cash Coins. You tend to get 3☆ or higher from these scratches.

Coming Soon - Unavailable for right now. I assume it will be event scratches whenever they come around.