Made this using age of wonders 2 map creator, and painstakingly cutting and pasting screens in to paint shop pro.
It is a head-to-head map (it can support 4, but isn't designed to) where the players are separated from eachother by water, and a blood-slavers island. Amidst the slavers and in part of the sea is an army of well equipped skeptics - designed to separate the two players by dominion as well.
Figure out how to cross the seas, get past the blood-based independents, and over to your enemies continent, and its time to battle. Usually by this time, the hope is, both nations will be pretty big.
43 provinces, 12 of them are water