Ball of lightning not working?
 

I've stopped playing AP for over a month ago (things to do, places to be..). I started her up again to find the pet dragon ability Ball of lightning broken. When I select the ability an go to an enemy stack the pointer turn to a question mark and clicking gives me the detailed info on the stack.

I've got the Steam version of the game and the rest of it seems all right.
Any ideas?

You don't case ball lightning on a stack, but rather on an empty square, and then it moves to where it thinks it will do the most damage.

Ball of lighting is not just a direct damage spell, ots more like summon so u cant place it on other unit ;p

Ball of lighting attacks 3 turns, so its not a single troop cast ability, u need to cast it on a empty square near the troops u want to be damaged. Ball of lighting will attack random troops on each turn and it is supossed that the troops targeted are troops with high numbers stack.

Thank you Thank you Thank you. How could I forget this?