Heir Coming Back From the Dead with an Army

So I was watching 1994 The Lion King with my daughter and I had an idea for the devs.

There should be the rare event for when you're assassinating people to inherit a title. What if there was an event where you assassinate a child and the scheme says "Success" but he comes back as an adult with an army to take back his throne because the agents screwed up the assassination and never told you?

Just like Simba returning to confront Scar at the end of The Lion King.