In the shower this morning I did some thinking about my large variant project. I think the pawn of king will promote to a Prince, a non-royal which moves as a King plus Alibaba. Another way to think of the Prince in this version would be as an Alfil + Dabbabh + Ferz + Wazir.

The wizard's towers will have two special rules: 1) placing your king in the enemies tower draws the game and 2) occupying both enemy towers with you own wizards wins the game.