This idea came from a comment I got a few weeks ago. 4 kingdoms fight each other, but every ~30ish years we force their kings to fight, and reward the kingdom who wins!
Mods I use:
PowerBox (For adding traits, and additional powers)
MoBox (For spawning zombie animals and additional creatures)
CrazyBox (For additional traits)
Selective Breeding (Traits are always inherited)
My other channel!
https://www.youtube.com/c/GregBroDudeMan