PD is a waste on Sion lol. Thats personal opinion.

But Toker, you remminded me that I need to recamp my Sion build with Trin force and Spirit Visage

lol i still dont understand why people ask about lifesteal on ad sion when his ulti gives him 100% lifesteal for a decent ammount of time on a relatively short cooldown...ANNNNYWAY

The only thing i really see this build lacking is some sort of survivability, all the damage is great if you can stay alive to dish it out, but with only 30 magic resistance you'll be eaten alive by a team with 1-2 good burst ap champions, madreds is only really useful if they have tanks that are really harassing and effecting team fights i'd really suggest getting some sort of magic resistance item be it hexdrinker or merc treads, and a warmogs armor/atmas impaler combination on sion i.e. (drop berserkers for mercs, drop cleaver for warmogs drop madreds for atmas, last whisper is kinda a waste also really, with your ulti on a 90 second cooldown attack speed really isnt that critical if your going for an AD build, I love Trinity Force here, gives you a little bit of everything and also a chance for a slow and a 130% boost on your attack damage per ability cast

So in esssssence, you lose about 125 AD/25 Armor/80 attack speed which really isnt needed and a enemy tank dependant item, and gain 100 AD, at LEAST 1k more health, and 45 armor...makes your survivability MUCH greater while sacrificing a bare minimum of attack damage, and really if you farm well with enrage AND warmogs, your health could go off the charts which just makes your attack damage rise from atmas, not a bad build but i really dont like any attack speed items on AD Sion besides Phantom Dancer

Why no Lifesteal? Seems kind of a waste to me..
You'll be able to lane longer and own even more 1 on 1.

It balances out really if you look at it.
Example: Crpytic Gaze deals 300magic damage and stuns for 3 seconds and you hit 100p/s.
Cryptic Gaze deals 150magic damage and stuns for 3 seconds and you hit 150p/s.

But really www.mobafire.com is for builds. You shouldn't worry about skills, masteries and runes. You'd be stupid enough to not know what to do with them. However, i do understand your suggestion lolzar. These items would work for that build. Use the skills however you like, but the items are good (:

why would you spec Cryptic gaze more than one time ealy game? i think you would benefit moroe from enrage since the stun duration doesn't increase as you spec it...

Well I see you've come back, and this time it looks better. I like this build. Its got great ealy game power, and you are going to be doing great. I like the Sword of Occult. Its a lovely item if you are doing well.

I would change the skills a lil bit though. Since you are all about dmg, I would go flip Enrage and Gaze. Early game rank 1 Gaze is more than enough for stun, and with Enrage you will be doing hitting harder. Plus you have Exhaust, so giving up some magic dmg, for more AD seems worth it. Plus you have Cripple so that -10 armor will be more useful.

Lets not fight like we did last time. Im just giving you suggestions

EDIT: +1