Idea- 3 Flags exist in the game, there location is known at all times. Each flag gives some kind of benefit to the holder, Whether it's you get 75% points for captures, your king generates 50% more energy, or your own promotion ranks are lowered by 1!
They can be captured and stolen.
Possible event: Flags
Each player PMs a current piece as a flag, and if the flag is captured both
A. Double the points of the pieces usual value
B. The player loses