User blog comment:JayfeatherXThestick/Attack speed Pantheon, why he might be viable./@comment-620927-20140327055134

This build is actually a pretty old idea, but you forgot one important item: Ohmwrecker.

Ohmwrecker delays the turret's attacks by 2.5 seconds, to which it must then lock on and attack again, effectively giving you three seconds without attacks that you can use to simply backdoor.

The only problem with this build is that with max attack speed and an Ohmwrecker you'd still need to bring a wave of minions to reliably push so the backdoor plating on turrets doesn't function and you can do regular damage to it.

Also, if people weren't already building Zephyr with Pantheon then I worry for you, because a Zephyr on Pantheon is AMAZING.