This is my first build with pantheon, but it's pretty sexy. So be nice and i hope this helps.

With items, basically get mostly AD items and then one helth item (frozen mallet) You should be getting first blood quite easily casue you have spear shot. You might also like to experiment with differen cooldown reduction builds. Then your spear shot will kick *** cause of the super short cooldown. You might alsoi like to try mana items, because recalling to get more mana is really annpoying mid game, when you could be getting double kills

Feel free to change the skill sequence depending on what abilities you use most. I suggest you start off with spear shot at the beggining though ( you usually get first blood if you do). But the rest is up to you.

I use heal and ignite soo that you have an extra damage speel and if your low on heqalth mid fight you can just quickly heal and then you win the fight soo its supper cool if you have heal. But you don't have top pick these. Thats just what I like, and it works well with Pantheon.

When your 1v1 or 1v2 jumpin with grand skyfall, this damages both players your trying to attack, then jump on the champion with more health than the other with ageisof zeonia, then use your heartseaker strike and spear shot to finish him off. One champion left. Your ageis should off cooled down ,depends on how quick you kill the other champion. So quickly do the same combo to finish the last champion off.