New cards, modified cards.

Finished new cards:
Antilibrary
Attentat
BATNA
Carrying Capacity
Cosma Shalizi
Digital Shaman
Flag of Convenience
Hawala
Kowloon Walled City
Markov Chain
Merit Good
Petard Hoist
Pluralistic Ignorance
Shu-Ha-Ri

Unfinished:
Crash-Only
Gulf of Aden
My Believies

Changes:
Festschrift: Now 2GG, "Creatures you control get +2/+2 and gain trample
until end of turn."
Phatic Speech: Now GG, "Green creatures you control get +1/+1 and gain
trample until end of turn."