So, first of all, i'm sorry for my bad english.
Ahm.. I playied pantheon for a while in the last weeks, so, I tryied to play him dps/cri/ad, and I found out that it's really nice, and fun to play him dps.
So.. There it how I build him dps.

Hope you enjoy it.

Champion Story

Far above the clouds on Mount Gargantuan resides a stalwart tribe of people known as the Stanpar, who still revere combat and war as penulimtate art forms. They remember the Runewars of Runeterra and know that the League of Legends can only repress the rising tides of violence for so long. Each member of the tribe is bred to be a disciplined and vicious warrior, preferring to battle soldiers of either the Noxian or Demacian armies only when outnumbered at least ten to one. Stanpar warriors are trained not only to be as lethal with their bare hands as the most capable martial artists, but also to fiercely wield the many relic-weapons of the tribe. Such treasures have been handed down from generation to generation, and have harnessed the mystical nature of Runeterra in their very cores. These relic-weapons are among the most dangerous in existence -- and it comes as no surprise that they have found their way to the League of Legends in the hands of Pantheon. This stone-faced warrior is a paragon of his people, his very existence an anthem of exultation to the art of combat. Pantheon found it insulting that the people of Valoran would install an organization to replace war, complete with so-called champions, without including the Stanpar. Gathering the blessings of his tribe and armed with the relics of his ancestors, he has decscended on the League to show the world a true warrior. He cares not who he fights, and cares nothing for the pageantry or prestige of a League champion, but lives only for the austere glory of battle. As long as Pantheon breathes, he thrirsts for another foe to vanquish.

"I was hoping they had more reinforcements." - Pantheon, standing amidst the pieces of a brutalized Noxian battalion.

Runes explanation

So, I go for full DPS flat runes, cause I do him DPS O.O'
<rolfmao>

I found it muuuuuch better than, hmm, full AD runes, or, mp/regen, crit runes or idk.. I found that full flat dps runes for him (of course, if u follow this build) it's the better way to kill your enemies fast in early/mid/late game, cause u got stun, u stun ur enemie, and rape him with ur increased attack speed \o/

Try it (:

Mastery explanation

I use 9/0/21 'cause u got 15% magic pen, cd reduction, increased mpregen, increased neutral buffs duration, death time redution, and of course, cd redution of ur summoner's spells.

Itens explanations

If ur searching for this, there it goes:
<CORE ITEM BUILD>

Berserker's Greaves;
Infinity Edge;
Phantom Dancer;
Phantom Dancer;
The Bloodthirster;
The Bloodthirster.

* Why I get Berserker's Greaves:
Pantheon doesn't really needs tons of mov. speed, and ur 2 P.D. gives u like 530 mov. speed, so you don't need Swiftness.
Pantheon doesn't need armor, you AREN'T a tank, so you don't need ninja tabis.
Pantheon doesn't need tons of CD, so, don't get ionian's boots.

The only other choice you have instead of berserker's, is mercury treads, for the reduction of CC. You decide!

* Why I get 2 P.D.:
2 P.D. gives you 110% of atk spd, 60% crit chance, and increased mov. speed, so, it's a must!

* Why I get 2 Bloodthirster:
After finishing IE and ur 2 P.D. u'll get around 80% crit chance, it's almost 100%, so u dont need more crit chance, not even more atk spd, u only need some life steal for the survability and tons of AD, 2 B.T. gives u 180 AD with full stacks, so, I don't have to explain why u should buy them.

Summoner Spells

Pantheon doesn't really have a easy way to escape, so I always go Gost and Flash, for the escape, but, if you want, you can go: Teleport, Exhaust, Ignite or even Heal.