User blog comment:JayfeatherXThestick/Attack speed Pantheon, why he might be viable./@comment-5342720-20140327035630

This is an interesting idea, but actually getting max attack speed is difficult, unoptimal and you will pose 0 threat to the enemy outside of backdooring, which I can really only see working out if all 5 of the enemy is on the other side of the map and you ult (it would have to be to an inhibitor/inhib turret to make the following 4v5 that would happen worth it.)

On the other hand, I think a Zephyr incorporated into a regular pantheon build could work (still not a great strat, but probably a fun one.) 50% atk speed is quite a bit, and 10% movement speed and tenacity will help a lot in escaping.