Now, with this being my first post I am slightly worried I am placing this in the right place, I would like to suggest the Cannon Tower. It can only attack ground troops and has a very low attack speed, yet even at level one it has splash damage. Also, its attack damage is very high. If this is similar to the Turret Tower than I am sorry as I have not bought it yet. (I play more on Block Wars and Egg wars than TD.I only know abut it due to some highly contradicting teammates. ("It attacks flying units" "No, it can attack all units") and that keeps going). So that is basically the Cannon Tower.