Ohmwrecker

Ohmwrecker actually could be very useful if it was catered towards assassins. Instead of defensive stats it could offer damage stats and would allow the assassin to tower dive easier. This way ohmwrecker could actually be used and will allow not too meta assassins such as Akali (who doesn't have much of an escape) to do their job and snowball easier which will put them into the meta. (Also it could compensate for champions who make use of invisibility or camoflaughe or whichever is getting changed. (Also as a side note it shouldn't have insane amounts of AP but only a fair amount. Also due to its original state it could just potentially have AP, Armor, and its Passive. This way champions will be able to build AP/armor items other than Zhonya's and will stick will the reducing turret damage theme.

It's just a thought! Does anyone have feedback?! :D Feel free to post them

EDIT: Maybe it could be an item used to disable an enemy champion for X amounts of seconds. The cooldown will have to be very high and the range very low but it could stay as a defensive item. (the disabling will work like a zhonyas for the enemy team or a single target point and click bard ult.)