pokemon cards buy one get one free for free? Almost, but they're all under $2 manufactured by MJ Holding Best Buy Is Giving Away

Padded envelope or cardboard box

Now, you probably need this to trigger twice before you feel okay with it, but the fact it gives you one of those triggers the turn you play it helps make up for that, as this will usually do something to the board right away, and its a value engine after that Lots of decks want to run as many permanents as possible because of Descend, and the Boulder gives you a removal spell that is still a permanent

Magic design is trying to adhere to those characteristics set by set but sometimes a card is released that doesn't seem to work within our conceptions of the colours of MTG - such a phenomenon we'd call a colour pie break

Multiple card sheets can be combined into larger decks if needed