Current questions and answers regarding the map editor.

Is it possible to create an arena for dueling mode? If so, please tell me how.

Yes, it is possible. For each battle arena, you need two objects: AdvMapDesc and AdventureFlybyScene. The first is the arena itself with decorations, and the second is a pointer to the grid position on the battlefield, on the AdvMapDesc, as well as some minor details. Then, you need to add the AdventureFlybyScene to the list of dueling arenas.