Yuuuuuuup. Spear with slow + DoT. Be even more annoying.
I *love* pantheon. Holyshit I don't know how I never discovered this guy early on. He's so fucking fun to play, and your lvl1 duels are HILARIOUS. No one can touch you 1v1 at lvl1. Riven? LOL rite. Trynd? Yeah he wishes. Renekton with cloth armor? You can still kill him at lvl1. The only problem imo is that you feel a lot like leblanc late game. Not many people can 1v1 you, and your burst damage is ridiculous, but you are soooo fragile in teamfights and if you don't crush your lane opponent you just lack anything late game.
I'm also not sure how he fits into the current meta. Panth *needs* to build serious damage to be relevant at all late game, and so you aren't able to really be a good tank. Top lane is usually where tanky champs rule, and so if you send Panth top instead of a bruiser, your team may lack a good tank. I personally prefer to run him mid, because you can really mess up a lot of casters too, (and obviously the ability to jump to both lanes is invaluable). But then your team may be lacking magic damage and need to run an AP champ elsewhere.
His lane strength is crazy though. Open dblade and you can seriously force people to recall or die at lvl1 or 2. Always spear never not spear and trade autos if they try to get anywhere near you. Once you hit 2, spear and jump on their face and just trade autos until they back up. *No one* can go toe to toe with you at this level, and you WILL force them to back off, and sometimes even get the early kill because a lot of players even at supposedly higher elos are simply not expecting to die at lvl1 and it somehow just doesn't register with them that "yuuup i can kill you already". They'll try to trade hits or last hit and forget all about your passive and your crazy damage output.
Using his passive well is super important too. Against other auto attackers it's what wins you the fight. As soon as your shield comes up, go start a fight. Right click on them and chuck a spear. If they run, yay, if they fight, yay! As soon as you block the first hit, W on them so you insta-proc another shield and block the next hit. You'll have done good damage by now and blocked 2 full autos which makes the trade look terrifyingly in your favor and they're likely to retreat. As they run, HSS them in the butt and chuck one last spear as it ends. EZPZ.
I'm still torn on runes for him though and I'm hoping people can help me out here. I'm not the best mathcrafter or whatnot and I've been experimenting with lots of different rune setups. Mainly only reds/quints I'm concerned about, and basically flat AD vs arpen. I used to run arpen marks and AD quints, but yesterday I was playing around with pure arpen and actually found myself dealing more damage than normal. Full arpen and a dorans opening is incredibly strong, but part of me also questions running full AD and starting the game with like +27 damage and chuck super death spears all day. What would be most efficient for panth?
I see Loci running panth a lot in ranked and so Loci if you read this please give me your thoughts! I love panth and I want to play him more in ranked games but I feel like unless I really REALLY crush my lane opponent, then I'm just not useful late game. I can insta-gib squishies with a Q->W->auto->E->Q combo late game, but if you get CC'd or focused you just explode. You're like a squishy AD carry that needs to be on the front lines. I just find him super hard to position. If your team lands great CC and you catch like 2-3 people in your E, ohhh my god you do crazy damage. But if you jump on someone and your team doesn't peel or anything and you get stunned, you're probably dead. Very GOBIGGOHOME champ. I also am not sure what summons to run. I always run ignite/flash and ignite is WONDERFUL in lane for early kills but late game I find myself seriously wishing I had another escape skill because I'm so damned fragile and super super vulnerable to CC T_T;
Oh, and you hard counter pirate like no one else in the game. Super fun match up. Block every Q huehuehuehue