Now I'm no professional, but I have the enthusiasm to make a new version of this item. The goal to provide both defensive and offensive viability in scenarios involving a turret. Either that be an enemy or an ally turret, it should be usable all the same to provide the most versatility. This item is also aimed towards mages.
:
+250 Health
+35 Armor
+20 Magic Resist
+45 Ability Power
Unique Active: Target a nearby turret, giving it a ring of blue runes around it that circle it and spark with magic. Each half second, a blue pulse is sent around the turret, dealing 20-56 [+30% of ability power] damage to all enemies that are still in it's radius for 3 seconds. Goes on a 30 second cooldown once it expires.
Cost: 2900 gold
So basically, use it on your turret to defend against a siege or a turret dive. Use it on an enemy turret to zone them out of their own turret during a gank or a siege. It works offensively and defensively. Only thing I'm not sure about is the cost... But yeah. This can do a base damage of 336 damage for all ticks at max rank and it scales extremely well -- however another issue is what if all the turrets are gone? I guess that's an issue current Ohmwrecker has as well.