Not Updated For Current Season
Pantheon. Isn't it often that you see one, he hurts a little early game, or is disastrously terrible? Well...don't be one of those! Be one of me!
Long Sword gives your abilities that early game advantage many times, unless you are paired with a bad pair. A bad pair means they have two harassers, both with the ability to pop their harass before you can. Remember - Q doesn't have a lot of range. Best to pair with physical - hit minions four times until your shields are floating around Pantheon, and then throw them a Q. I don't usually use W followed by E until I'm ready to gank (I use E to farm creeps here and there). I mean, if I have full mana, and the push is going well, then sure, harass with W and E, but remember until you have the Chalice of Harmony, your mana isn't going to come back very fast.
One your first trip - boots of speed + Recurve bow.
Second trip - Upgrade to Last Whisper, and berserkers if you have the money (if the game is going a little slow, don't worry if your not up to speed with items on this guide just yet.
Third trip - Pick up one BF sword.
Fourth - Finish infinity edge.
Fifth - Malady.
Sixth - Phantom Dancer
Seventh - Bloodthirster.
Gameplay. You run out to your lane. Drop your first point in Spear Shot, this thing early game is probably one of the easiest ways to get firstblood. Don't recklessly drop this on your enemy (and remember to drop it only on one). Once you reach level two, you should have your enemy at least 5/8th down in health. If not, just keep harassing. Once you have him at about 3/8ths health (by this time, you should have one rank in all three skills. Stun him - your lane partner hopefully isn't ******ed and throws in some damage, you follow up W with an immediate E (and make sure to aim properly!). If they still have a little bit of health? BAM! Q. You should get firstblood at least a third of your games.
Okay. So now your level six. You might have two-three kills by now, at least one. Many people say - this ult is to be saved for team fights. Level six team fights rarely escalate to more than two-three people. Here's how you use it effectively - I'll also cover aiming. If you left your lane to go buy, and the other lanes are doing just dandy, you jump in offensively. Let's say you saw them hit the tower a few times - and the creep wave is dying out, aim it between the two bushes. Right after, you hit them with a W, followed by an E, then dump exhaust on them, and throw one or two Qs. The point of the exhaust isn't really to kill them (sometimes you do), but more or less to intimidate them. It will keep them from pushing your tower too hard.
And the rest of the gameplay you'll figure out. No one can really tell you how to aim your ult, you learn by trial and error. Knowning enemy speed and predicting movement is probably your best bet to a solid hit.