1) Decorate the sky with items.
In tryton you can place objects in the void, but if you step in it, beybye! It seems that the objects don't follow the same physical rules as you and monsters.

2) Use Braffit's shadow.
When you fight in Arnika Braffit will from time to time cast a spell on the monsters. He is deep in his cellar but can see the actions in town. This guy must have Divine Power ;)