Well first of all I actually was unaware of this Zhonya's Bug. I guess, for obvious reasons, we can't purchase that item anymore. I'll give you an item build in a bit but let's talk about the other things first.
Some people called it the "Zhonya's Bug", but in reality, what was happening was that after about 10 minutes into the game, ANY activatable item, (Zhonya's, Executioner's, potions, wards, etc) could cause you to desynch completely, and have to reboot.
It was fixed in the last major patch though. It's all fine now.