The game looks quite interesting.
A couple of remarks:
The Bishop is weaker than the Knight even on the 49-square center (a
Bishop cannot slide more than six squares in any direction, and a Knight
isn't at all hampered by the limits of the board). A Chancellor is also
much stronger than a Queen. Maybe the Terrain should be a bit more
Bishop-friendly, but I don't really see how.
The Serpent is a very nice piece, and I would suggest to disallow the
capture of a Serpent by a Serpent to keep them longer into play.
