While I understand where you are coming from, this utility does not actually help anyone to understand the workings of a regicide game. It is simply a massacre of three kings and then the destruction of a few houses. In addition, the [kill object --> victory of player] trigger is not really worth a utility on its own. Perhaps this should be combined with other things into a larger utility on victory conditions.
For future utilities, I recommend that you only make them for showing unique methods of performing a typical AoK Scenario task or for demonstrating a good method of performing a never-before-thought-of task which you have discovered.
This was a good try for your first utility, but it is simply not on the level necessary for a higher rating. Sorry.