Bounce

I was wondering how i'd make an item bounce off a wall like in dodgeball ( not making dodgeball. ) Anyone mind explaining? Thanks in advance.

If you mean something like the axe deflection in Creatures of the Night, you have to create a custom unit off the wisp, give it Aloc (locust) and set all it's stats, like movement speed, to the missile's. You can then order the unit to move from place to place and Aloc makes it unselectable.