Need a spell that heads in targeted direction

Okay, im looking for a spell that heads in the targeted direction and only stops when it hits a character/wall and then it dies and drops an item.

Describe what do you want the spell to do...

Well, Im trying to make a "Dodge Ball" Map, and i need a spell that uses up the ball in his backpack throws it in a target direction, with no homing on enemy units so they can dodge the ball and when it collides with a unit/wall it deals damage and then despawns and spawns a ball at its location.