Defensive building

The defensive building (don't know what it'll look like) launches a high speed projectile, that damages every troop on field. It has 200 damage, but it's split upon every troop (this is for all troops in its range). The range is the same as the inferno tower's range. The rof (rate of fire) is 1/2 the speed of the mortar. For the troop outside the range, 100 damage is split upon them. If there is more than 10 troops outside of the range it'll only effect the 10 closest. This building can hit air, but with reduced damage. What do you guys think? :confused:

Isn't this the inferno tower?

So is this basically just a spin-off of a mix of different defenses? Maybe some more detail will help :)