AP vs Towers
With AD champions proficiency at taking towers, I was thinking AP champions could get some help in the tower damage department. Maybe have the bonus damage from 
apply to towers. Also rework 
to make it similar to Rite of Ruin (AP, 20% CDR, 100% mana regen and charge system to damage towers) and maintain the ability to disable towers. This way you have a third option for mana regen instead of just 
and 
. would probably stop being such a forgotten item and both AA and caster AP champions get better at damaging towers.
