What if Ohmwrecker spawned a siege ballista?
The thing from Nexus Siege? 
The thing from Nexus Siege? 
sits too close into ZZrots territory for my taste.
That's true. Wish Zz'Rot was more of a waveclear/splitpush tool, but Sunfire exists for that too. And Riot clearly doesn't like how Zz'Rot can just auto push lane.
I build Ohmwrecker on some tanks just for the sheer tower diving utility
that thing from nexus siege pretty much just eats turrets alive and has an obnoxious range. The only reason it even exist in nexus siege is because of he way that mode works in which you want to destroy the nexus as fast as possible and prevent the enemy from beating your time or beat whatever time the enemy has)