This build might need some tweaks in game depending on who are you going against and such.
1. Start out with a boots of speed and 3 health potions for good lane sustain and harassment.
1.5. If you having a hard time in lane, go pick up a wriggles lantern for more sustain.
2. Go ahead and buy a brutalizer then upgrade your boots of speed into a berserker's greaves or mercury treads based on what opponent your against.
3. Upgrade your brutalizer into a Youmuu's Ghostblade.
4. Buy a Frozen Mallet for your next choice and to have better damage and slows for you and your team fights.
5. Buy a Atma's impaler for more tanky and burst damage since you also have a Frozen mallet already
6. Then buy a Quicksilver Sash or a Banshee's Veil Depending on if they have lots of CC or if you need some Magic resist.

That's the end of this build! Hope you like it!
Oh and if you have heard of this build before, it's because I decided to post this build just in case no one has ever heard or seen of someone's Youtube account named, ColbyCheeze. I felt posting his build was a good idea just in case no one has ever seen his videos before, and I think this a great build.

I dont find that I autoattack often enough on panth to have lifesteal items being worth very much. : (

That said, I still like Dorans Blade for the Heath and damage. Longsword is a pretty solid early buy too

im awesome! i bougth him because you gave me hints and they are awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1

Atma's is a poor choice now, even stacked onto a Mallet. You can do better item combinations that yield more cost effectiveness for AD and Armor, considering that gain little benefit from the crit. Look at it this way, if you actually are using the crit, Atma's is plenty cost effective at 2kHP. If you are NOT using the crit, it's pretty much never cost effective now.

You should probably also wait on the ghostblade. Brutalizer is amazing early game, but ghostblade doesnt add that much until later when you are jumping in and chasing so it could probably be pushed back and buy a better item earlier. (Like Giant Belt, Armor, or MR item depending on who you laning against)

philo is the only way to start pantheon