Sated Devourer Pantheon
I tried it in a custom match...it was nuts...you could run to a tower (alone without minions), take out a 3rd of its hp, then run into the jungle and heal back to full in about 15 seconds, then you could use your ult if you wanted and leap right back onto the tower
now bare in mind, that's without minions...lower that armor by 200 and suddenly the whole tower is gone
I came up with the idea because someone used sated devourer fizz in jungle and just afk farmed...when they had full build, our entire team literally couldn't damage him and he'd hit for like 30% of anyone's hp at a time, perhaps even more
but my point is that with sated devourer, pantheon becomes nearly immune to towers and auto attacks so long as there is a minion or target to hit, though it's actually more to the point that he can engage the tower alone when there aren't minions to chunk his hp
but another point, his passive can help him negate some of this freelo from the sated devourer