Silverwave
Warlord
As per the game manual, you can pillage your own improvements and roads and have a chance of getting gold.
So I guess I'll be making an extra worker to build a useless improvement in an uneeded city tile and be pillaging it, repairing it, pillaging it, repair, and so on for extra gold
Heck, If I found that pillaged road have no maintenance cost, I'll be constructing a 1 tile road segment instead of an improvement and make sure I destroy it at the same turn it's repaired so I never pay maintenance and get gold from it.
This is cheezy, but may actually work.
So I guess I'll be making an extra worker to build a useless improvement in an uneeded city tile and be pillaging it, repairing it, pillaging it, repair, and so on for extra gold

Heck, If I found that pillaged road have no maintenance cost, I'll be constructing a 1 tile road segment instead of an improvement and make sure I destroy it at the same turn it's repaired so I never pay maintenance and get gold from it.
This is cheezy, but may actually work.