Doing a large, Emperor, DOmination victory on 'Large' (theyre not) Islands. I have most CSs allied because of gunboat diplomacy. Whenever I go to war, the gold income of my enemy craters, than craters some more when all the CSs start pillaging their trade routes. CSs are powerful, esp. when they've been umolested for 100 turns and have alot of good units buildt up.