Tsang Wuqiong, the August Emperor of Jade, the Infinite King
Some sovereigns prefer a different sort of tax from their subjects - whether freely given, or taken by force.
War of the Roses as a campaign plot. Two noble lines converge somehow, each line thinks it has the rightful claim to the throne. Deciding this long ago was handled by some divine intervention, requiring both houses to come together at some point. They aren't so willing to get together this time. Civil war, or a new king?