Zz'rot isn't exactly viable anymore...

zzrot/banner/yorick ulty, i call it the 2 minute turret

take a turret almost every 2 minutes (3 if youvwait for tele)

never underestimate that item in bronze

While it isn't gold efficient without it's effects (The stats are worth about 2465 gold) it can be used to hold a lane, shove towers, and create pressure and is one of 3 double resistance items. The heathregen of it is amazing if you play someone who benefits from % health regen (while Soraka level 1 would only get 3 bonus hp per 5 Heimer would get a bonus 16 hp per 5 level 1).

It's a solid item for tanks however it isn't as good as it once was but is still definitely viable.