What's in the Box Shadows over Innistrad gives you 24 miniatures, 8 dice, several 2-sided map boards, 48 spell cards, 3 funky-looking Cyptoliths, 9 sand terrain tiles, 2 glyphs, and lots of little red wound markers and augment tokens
The effect of this card is risky to use, but when everything goes right you can reap a huge reward by doubling most mana across the board, you can use high mana maneuvers like those seen in a Vial Smasher not-white four-color commander deck
Though if you are running those three, and you have creatures, this is pretty amazing
That requires a few extra lands in play for Fabled Passage, but you can usually work around that restriction