You can place tents belonging to your opponent somewhere in the swamp, at the very end. Then, whoever is the strongest can cross the bridge. And those who like to run and swim can go back to their boat.
I think teleporting from small neutral creatures is easier. Then you don't have to change anything. The second castle is taken in no time anyway. And you don't need to go there with an army a second time, right?
Papalars, we would be grateful.
Shnurov, come out of the shadows.