Recently, I started to play Pantheon differently. I realized that my new play style was an improvement over my older build, so I decided to remake the whole guide. The biggest changes were in play style, items, and mind set. This is very different from my tanking version of Pantheon. Hopefully, you guys can make as much use of this build as I did.

Marks

I use the Greater Marks of Desolation, which give armor piercing, which makes all Pantheon's skills more deadly early on in the game, making his level 1 Spear Shot invaluable.

Seals

I use the Greater Seals of Fortitude, which takes away the squishy-ness a little. Pantheon needs to be less like a walking pincushion for other Spartans. I could also use some Greater Seals of Resilience/Evasion.

Glyphs

I use the Greater Glyphs of Focus, which decreases cool-down times. Pantheon's main damage come from his skills, so cool-downs are one of those things that stop his maximum DPS.

Quintessences

I chose to use Greater Quintessences of Strength for the added damage. This along with the marks I use are great for early game damage.

What Masteries?

I use 11 on offense, and 19 in utility. My masteries are based around keeping me alive and in the fight. The skill related masteries are used to boost the effectiveness of my summoner spells.

Which Spells?

I use Ghost and Exhaust for keeping my distance if needed, and to gank enemies if needed. I can also combine the two for a larger distance gap between me and my pursuer or vice versa.
Because of my masteries, their effectiveness is boosted, which allows me to run longer and faster with Ghost, and take down some armor with Exhaust.

Bad Spells

Teleport: He already has Grand Skyfall.
Clairvoyance: Don't really need.
Revive: Why whuld you even use it?
Cleanse: Not helpful enough.

Most of the items I buy are for my attack power, and a little for my attack speed. At the end game, I start adding HP items, like Phage. Along the way, you can buy situational items to help adapt to your opponent's growth.

Early game, farming is hard. That is why I level Spear Shot first. With Spear Shot, I can hug the turret, and last hit enemy minions. As champions come to rescue their little comrades, I continue to hug the turret for safety. I do this until I an capable of taking down a champion on my own.

Spear Shot is Pantheon's harassing tool. It does 16/28/40/52/64 + 100/115/130/145/160% total physical damage. He can last hit minions early game, and can finish retreating champions late game. This skill is great for duels, because of its fast cool down time, and bonus damage. Using this skill while hugging a turret can be very annoying for enemies.

A useful skill, but not very powerful on its own as it only does 50/75/100/125/150 + 100% ability power. It adds stun to an opponent, and automatically gives you the Aegis Protection, which blocks the next attack, including turret blasts. This skill is usually combo-ed with Heart Seeker Strike to make sure it lands and to do destructive damage.

Pantheon's killing skill. It does 4/6/8/10/12 + 20/25/30/35/40% total physical damage per strike, and does double damage to enemy champions! It strikes 5 times in a cone shape, so it can devastate multiple targets in one cast. This skill is not the best for killing minions, monsters, or epic monsters, but destroys champions. It doesn't do damage to turrets unfortunately...

This is your teleport. It deals 400/700/1000 + 100% of your ability power, which is absent in my build. This skill lets you get into a team battle quick. You can activate it just about anywhere on the map. The closer your opponents are to the center, the more damage they take. Unfortunately, smarter players will run away from the large circle that appears, and take less damage. BUT, I take this skill as a built in teleport, and whisk away to the team fight.

Pantheon has many skills that can be combo-ed together. The longest combo is available if you are at the shop, and your team is in a team fight.

Grand Skyfall-> Aegis of Zeonia-> HSS-> Spear Shot-> Kill or two

You start with Skyfall for a teleport with some damage to enemies, and Aegis Smash the closest champion to you. After stunning, you immediately start your HSS to devastate your opponent, and follow up with Spear Shot if necessary.

Aegis of Zeonia-> HSS-> Spear Shot-> Kill

The basic rush kill combo. If your opponent is in range for an Aegis Smash, go ahead, and stun your target. As soon as the attack connects, ready your HSS for destruction. IF that doesn't finish them, Spear Shot will.

Pantheon is not very good at tanking, but deals a lot of DPS, (as he is a melee DPS). Playing strategically is important, as you can die easily if you get too cocky. Pantheon's Aegis Protection passive can help you turret dive, as it will block the shot, and you can Aegis Smash your target to death, and out of the way of the turret.

Main Concept:
Be offensive, but not TOO offensive, or you can easily be ganked by defensive champions.

Pros
- Pantheon, Our favorite Spartan, is an effective DPS champion who can easily defeat enemy champions with his strength.

- Pantheon's skills can do a lot of damage in a shot period of time, and can destroy a turret fast.

- Pantheon's HSS has a passive that guarantees a critical hit on an enemy that has less than 15% hp remaining, minion/champion/monsters.

Cons
- Pantheon is very squishy with low defense and HP.

- Pantheon is mana hungry, which can be a problem if you don't watch yourself.

- Pantheon can easily be harassed by other ranged DPS champions, like Ashe.