GOTTA HIT YORICK MASTERY 7 BEFORE THE UPDATE

search for Invertedcomposer (NA), do his build and see his replays.

what's a yorick?

As a blanket statement, I posted a long Yorick thing a while back and included this:

How to build Yorick? Rush a tear and start mana crystal+consumable pot with W for poke (lot of damage at level 1). Try and first back around 750 gold minimum for tear and long sword -- at least level 4 so you can get a QW off to start your tear right! Buy a pickaxe and normal boots. Now you are farming your tear. Get your Manamune, Sheen, Swifties, Triforce, Deadman's. Now you have options. Maw works, deaths dance is effective, mana issues? Essence Reaver. Skills from 1 -> w-e-w-q-e-r then focus r>w>e>q. Poke with W, Sustain with E, Melee with Q, R for a teammate to back you up (even if it's just your own little non-exploding Yorick Clone).

To add: If you see a trap like a mushroom or shaco box, drop your W on it. You build AD, not AP. QE scales off AD. I start W most games. I focus E only when I have sustain issues. Your ghouls lose focus on enemy champions when they run into an unwarded bush. Your ghouls will focus the minion you cast it on until that minion dies before charging a nearby enemy champion.

That's pretty much all the main points. :)