Far above the clouds on Mount Targon resides a stalwart tribe of people known as the Rakkor who still revere combat and war as ultimate artforms. 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. Rakkor 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 Rakkor. Gathering the blessings of his tribe and armed with the relics of his ancestors, he has descended 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 thirsts for another foe to vanquish.

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

here are 4 builds in which you can use on pantheon the first was inspired by
hotshotGG.Most of it is his build i added warmogs for more hp instead of something damaged based E.G:The brutalizer.The second build is the build i use when i play pantheon it is expensive but when built is amazzing.The third is a build that manly focus on damage i added frozen mallet for the slow,hp and damage.The fourth is a tank panth ive never played pantheon as a tank as his damage is so high with a good build.

Im sorry to say im to lazy to put anything else :(.
P.S buy wards it will help in the long run encourage your team to get some too.

V1.0.0.123:

Heartseeker Strike Heartseeker Strike:
Now does a better job of hitting targets on top of Pantheon
Base damage per hit increased to 13/23/33/43/53 from 4/6/8/10/12
Scaling changed to a 0.6 per bonus attack damage ratio from a 0.2/0.25/0.3/0.35/0.4 per total attack damage ratio.
Now fires 3 strikes instead of 5.
Cooldown reduced to 10/9/8/7/6 seconds from 18/17/16/15/14 seconds.
Mana cost reduced to 45/50/55/60/65 from 70 at all ranks.
Channel duration reduced to .75 seconds from 1.8 seconds.
Spear Shot Spear Shot
Base damage increased to 65/105/145/185/225 from 16/28/40/52/64
Now scales off of a 1.6 bonus Attack Damage ratio from a 1/1.15/1.3/1.45/1.6 total Attack Damage ratio
Certain Death now causes Spear Shot to critically strike for 1.5x damage
Aegis of Zeonia Aegis of Zeonia
Cooldown adjusted to 13/12/11/10/9 seconds from 12 seconds at all levels
Stun duration adjusted to 1 second from .7/.9/1.1/1.3/1.5
Pantheon will now attempt to attack the target after using Aegis of Zeonia
Grand Skyfall Grand Skyfall
Jump channel time reduced to 2 seconds from 3 seconds
Land time reduced to 1.5 seconds from 2 seconds
Edge damage increased to 50% from 33%

V1.0.0.122:

Grand Skyfall Grand Skyfall now has a range of 5500

V1.0.0.118:

Fixed a bug where casting Aegis of Zeonia Aegis of Zeonia from max range would sometimes fail to stun or damage the target (unrelated to terrain).

V1.0.0.115:

Aegis Protection Aegis Protection now shows an alternate run animation for Pantheon while active.

V1.0.0.114:

Fixed a bug where Aegis Protection Aegis Protection triggered after every 4 attacks, but every 5 spell casts (reduced casts required to 4).

V1.0.0.111:

Heartseeker Strike Heartseeker Strike now deals damage slower - it takes 0.5 seconds longer to deal full damage.
Grand Skyfall Grand Skyfall now has a small area near the center that deals full damage (previously it was impossible to deal full damage to any target).

V1.0.0.109:

Aegis of Zeonia Aegis of Zeonia stun duration reduced to 0.7/0.9/1.1/1.3/1.5 seconds from 1/1.25/1.5/1.75/2.

V1.0.0.108:

Grand Skyfall Grand Skyfall is now more visible to allies:
The green circle that allies see now appears when Pantheon starts channeling.
The red circle that enemies see still draws when he leaps into the air.

V1.0.0.107:

Spear Shot Spear Shot base damage reduced at earlier ranks to 16/28/40/52/64 from 20/31/42/53/64.
Heartseeker Strike Heartseeker Strike scaling damage reduced at earlier ranks to 20/25/30/35/40% from 24/28/32/36/40%.

V1.0.0.106:

Spear Shot Spear Shot base damage reduced to 20/31/42/53/64 from 30/40/50/60/70.
Heartseeker Strike Heartseeker Strike attack damage conversion increased to 28/31/34/37/40% from 18/22/26/30/34%.
Grand Skyfall Grand Skyfall mana cost reduced to 150 from 150/250/350.
Aegis Protection Aegis Protection now shows a counter as you build up charges.
The threshold required to trigger the Aegis Protection Aegis Protection now increases with Pantheon's level.

V1.0.0.100:

Corrected a display error with Pantheon's auto attack and death recap.
Aegis of Zeonia Aegis of Zeonia can no longer be cast while rooted.
Grand Skyfall Grand Skyfall can no longer be cast while rooted.

V1.0.0.99:

Fixed a typo in Pantheon's lore.

V1.0.0.96:

Stats:
Base health increased to 520 from 505.
Base armor increased to 21 from 20.1.
Health per level increased to 87 from 85.
Spear Shot Spear Shot mana cost increased to 45 at all ranks from 30/35/40/45/50.
Aegis of Zeonia Aegis of Zeonia:
Cooldown modified to 12 seconds at all ranks from 20/17.5/15/12.5/10.
Stun duration changed to 1/1.25/1.5/1.75/2 from 1.5.
It now properly interacts with spell shields.
Heartseeker Strike Heartseeker Strike:
Base damage reduced to 4/6/8/10/12 from 6/9/12/15/18.
Scaling damage reduced to 18/22/26/30/34% from 20/25/30/35/40%.
Cooldown reduced to 20/19/18/17/16 from 26/24/22/20/18.
Grand Skyfall Grand Skyfall:
It will now apply smoother damage especially against large targets.
It will now properly interact with spell shields.

V1.0.0.94:

Heartseeker Strike Heartseeker Strike:
Damage scaling increased to 20/25/30/35/40%.
It will now properly double the damage of the entire ability against champions, rather than just doubling part of the damage.
Fixed a bug where it was dealing too much damage based upon your bonus damage.
Fixed a bug where it procced cast effects with every tick.
Spear Shot Spear Shot:
Attack damage scaling increased to 100/115/130/145/160%, from 100/110/120/130/140%.
Fixed a bug where it wasn't scaling with enough of your damage from items.
Grand Skyfall Grand Skyfall:
It now breaks spell shields and is blocked by spell shields.
Fixed a bug where it was slowing for an incorrect amount of time.
Pantheon will now be properly considered melee for the sake of items like Youmuu's Ghostblade Youmuu's Ghostblade.

V1.0.0.86:

Reduced the summoner spell cooldown so that players can cast summoner spells right after Pantheon completes his Grand Skyfall Grand Skyfall.

V1.0.0.85:

Heartseeker Strike Heartseeker Strike cooldown reduced to 26/24/22/20/18 from 30/28/26/24/22.
Grand Skyfall Grand Skyfall:
Cooldown reduced to 150/135/120 from 180/150/120.
Cooldown on channel cancel reduced to 10 from 25.
Falling time reduced to 1.5 from 2.
Fixed a bug that allowed Pantheon to cast Summoner spells before landing.
Added a new sound to Spear Shot Spear Shot.

V1.0.0.83:

Aegis of Zeonia Aegis of Zeonia is no longer castable while immobilized.
Fixed a minor tooltip typo with Heartseeker Strike Heartseeker Strike.

V1.0.0.75:

Fixed an issue that would cause Aegis of Zeonia Aegis of Zeonia to not stun targets if you did not move as part of the skill.

V1.0.0.72: Added.

Spear Shot Spear Shot: Pantheon hurls his spear at an enemy unit, dealing attack damage and a percentage of his weapon damage.
Aegis of Zeonia Aegis of Zeonia: Pantheon leaps at an enemy champion, bashing them with his shield and stunning them. This also refreshes his Aegis Protection.
Heartseeker Strike Heartseeker Strike: Pantheon unleashes 5 swift strikes in front of him, dealing double damage to Champions. Pantheon also becomes more aware of his enemy's vital spots, allowing him to always critically strike enemies at low health.
Grand Skyfall Grand Skyfall (Ultimate): Pantheon composes himself then leaps into the air to a location, striking all enemy units in the area and slowing them for 1 second. Enemies closer to the impact point take more damage.
Aegis Protection Aegis Protection (Innate): After attacking or casting spells 4 times, Pantheon will completely block the next normal attack that deals more than 40 damage to him.