Hello My name is CampingCarl3 this is my first build so leave a constructive comment not just this build sucks. Thank you.

Pantheon is one of my favorite champions because i mean look at him h ejust screams, "This is Sparta!". Anyway, srry for the rant, he is an Assassin, melee beast. His pros...
Pros
*High Damage
*Ultimate allows to go anywhere on map
*Fairly Easy too play
Cons
*Not the highest health in the league, but hes not squishy.
*low mana pool
*You will get raged at when you come flying in from the sky.

I choose the runes i did because we are going attack damage and your low mana pool is why i got the seals for my glyphs i got cooldowns so i can stun someone as fast as possible and keep on chunking my spear.

*9 Greater Marks of Desolation
*9 Greater Seals of Clarity
*9 Greater Glyphs of Celerity
*3 Quintessence Of Fortitude

Not much to say here, but i go 21-0-9. I just feel like this gos best with my play style.

is my first item along with *3 Then i turn my boots into Beserkers Boots. Next I get a ] I turn that into a i get another to turn into Blood Thirster After i get once again can u guess? Another to turn into and for my last item a as my alst item i keep it situational if high mage team go Banshees Veil aka they have Karthas or some ult that could own u without a Banshees veil if your low hp. Or a {icon=Thornmail size=50} to counter there carry Ashe Size 50 etc...

Here ill just say lvl 1 Q etc..
Lvl 1 Q
Lvl 2 W
Lvl 3 E
Lvl 4 Q
Lvl 5 Q
Lvl 6 R
Lvl 7 Q
Lvl 8 W
Lvl 9 Q
Lvl 10 W
Lvl 11 R
Lvl 12 W
Lvl 13 W
Lvl 14 E
Lvl 15 E
Lvl 16 R
Lvl 17 E
Lvl 18 E

Well Pantheon if u go ad( a.k.a. attack damage) His Q is OOOOOOOOPPPPPPP lol. At lvl 1 does like 16 damage( plus 100% of your attack damage) nvm... Here are the official stats from League of legends home page. Spear Shot - Pantheon hurls his spear at an opponent, dealing damage.
Pantheon hurls his spear at an opponent, dealing 16/28/40/52/64 (+) physical damage (100/115/130/145/160% of his total Attack Damage).
Cost45/45/45/45/45 ManaRange600. Ok imagine your lvl 18. 451 ad or more depending on your final item. 64 + around 500 i believe. on a like 3 seconds cool down thats a good 564 nuke every 3 seconds.

Dont jungle with Panth please your wasting a pvp talent like no other dont chill in jungle panth is a terrible jungler in my opinion anyway. You can try though, but do in private match dont go 0-5 in first 4 min of a live game by trying to jungle panth lol.

Panth going mid is actually not to bad depending on who u go against u dont want to go 1v1 mid with karthus or really even anivia. I personally hate teemo, but still going mid is not that bad a move if your team doesnt have a major mid person( aka Karthas, teemo, anivia, or ez)
I prefer to go to a sidelane though.

For my summoner skills I Just pick ghost and Flash because i feel those spells give me the ability to chase or flee at whim.

I can't really stress this enough WARDS can be the diffrence between winning a game and losing because of ganks and other team getting baron under your nose. IS it really that hard to buy a few wards maybe u got an extra 75 gold when b just buy yourself a ward encourage your teammates to as well.

Well That is my Panth build Remember be a team player dont ult in to sk someone try and use ult to save teammates save tower or even escape as last resort (Not major effective at last use, but still u could try) Also dont forget u can cancel ult if itll put u in deathtrap or u missclick lets say in enemy spawn. You may disagree You may Agree Just dont troll. Leave a comment maybe I can make a better build with the advice of the community. Peace