Black/Green: Fill the Graveyard (Midrange) The Blue/Black graveyard strategy is patient and deliberate
Think Twice (Japanese Showcase, Fracture Foil) - $92 15
1 Mana Crypt Well, It Does In Fact Flip A Coin Calling Mana Crypt a "coin-flip card" is cheating to some extent
Its effect alone is excellent, thoughfor just 1 mana and tapping it, players can draw 2 cards and create a 1/1 Pilot token
That means, if you're playing Deck A, you have access to 50 percent of the cards, and if you're playing Deck B, you have access to 30 percent of the cards
I suck at math, but luckily Frank Karsten covered this very problem in an excellent article that I highly recommend reading