Unexpected role for Pantheon that works surprisingly well in my opinion
Pantheon Support, built like a tanky bruiser with aftershock with E max first
You have reliable engage in lane and can block many damamging skillshots, you have a slow, and I think you can be a good peeler and gank enabler. Also with font of like and empowered Q's + Relic shield you really can help with the sustain in lane, while your base damages are enough to zone off some supports. With e max you shave off some of the CD, off your E and CDR will make it reliable every trade making you a good peeler. If you get the mindset of a peeler or lockdown pick-off character in teamfights combined witht he support tank build (I go with black cleaver for some mid game damage, and then instantly knights vow) you can easily take some punishment, whiel providing a lot fo sues in teamfights especially with 40% CDR you have 5 secodn cooldown on your stun making it easily spammable to both attack and protect your allies.
What really makes him betetr support than pre rework is his slow, and capability to all off skillshots, but also he could easily ult to roam and help jungler or mid. My ult once stopepd an invade and resulted in a kill.