To calculate the expected value of a box, perform these steps: Multiply the value of a card by the odds of opening the card
And, since there are a bunch of different directions you can take a multicolor deck that may not always overlap in terms of card choices, it makes a lot of sense that the most played five-color card is an all-in-one mana fixer
It also blanks indestructible, so depending on the current meta, this card can see a lot of Standard play, at least
Brain Freeze This might be the most powerful mill finisher card of all time it serves as both a self-mill enabler and an opponent-milling finisher in storm combo decks
Living Weapon, for Mirrodin!, anything that enters with a creature - copying these gives us more creatures that stick around
The Eldrazi are otherworldly beings of great hunger and power that all-but annihilated the planes of Zendikar and Innistrad, and that power can be yours (in Commander)