Most of time i play pantheon like this:
1.my summoners spells are exhaust and ignite and my masterious sre 22/0/9
2.i buy doransblade and one heal pot (dont spam your spear shot too often in this situation)
3.i upgrade the same like you
4. then i buy Berserker's Greaves and the items for bloodthirster
5. i buy bloodthirster and Infinity Edge
6.now when i got any problems against mages i buy one Banshees veil (i dont need sunfiecape because i kill every dmg dealer in seconds!!)
7. most of time at this point the game is over but in the end i got Berserker's Greaves,2-3 times bloodthirster,Infinity Edge,Banshees veil,and when i ogt real problems with strong enemies i buy frozen mallet

if you want we can play on round one vs one in game my name is "little Bat" invite me at your liste and then i will show the real power of pantheon^^ :-)

what are your stats with this itembuild?

I find that Clarity helps with just about any situation, especially since it aids your allies' mana pool as well as your own.

You'll have to be more specific about masteries.

I wouldn't dare play him as a hybrid and my build is obviously geared towards AD, not a single AP item on it. He is VERY much a massive damage dealer through AD. I don't understand how you can say otherwise.

What would you suggest in place of Sunfire Cape? I find it helps deal out more damage and helps to keep him alive more.

If you answer this, I will try out an altered build and see if it's worthy of an edit to my build. The stats are listed clear as day on the front page of this build.

i play pantheon very often but ähhhh
first i never need clarity
second RegeNade is right the 21th point in the masterie bild is the best point you really need it
and third you dont play him as an hybrid and you dont play him as an massive dmg dealer
first you buy so many items for dmg and after that you buy one defense item pls thats not really seriously you really dont need one sunfirecape in late game

try to change it and pls tell me your results
p.s. what stats do you got with this item build ??

Bloodthirsters are nice, but IE's give more damage output, and he shouldn't need to stack Bloodthirsters after you get SotO stacks and IE if you're playing him correctly.

As for masteries, I just put my generic masteries down.

i dont like it , if u change ur masteries (21-0-9) it can be good, but why no bloodthirster u think u dont need them???

try to use the chapters given by mobafire when creating guides.
it is not funny to read this (textblock hits critical, Flitzekatze and a lot of other users die) after you've done this i will give a real review of your guide =)