Yorick

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Their Tomb Awaits

Massive tower pressure and lane dueling.

Resolve

Durability and crowd control

Grasp of the Undying

Every 4s your next attack on a champion deals bonus damage, heals you, and permanently increases your health.
Demolish

Charge up a powerful attack against a tower while near it.
Second Wind

Restore health over time based on your missing health.
Overgrowth

Every 8 monsters or enemy minions that die near you permanently increases your max health by 0.2%.

Sorcery

+65 health and +10 AP or 6 AD, adaptive

The Ultimate Hat

Gain cooldown reduction and max cooldown reduction on your ultimate. This is increased further each time you use your ultimate, up to a maximum.
Transcendence

Gain 10% CDR when you reach level 10. Excess CDR becomes AP or AD, Adaptive.

WhyGrasp of the Undying

Yorick's trading/fighting pattern relies heavily on [Q], therefore auto attacks. Grasp's heal and bonus damage keep you healthy and empower longer duration duels.

WhyDemolish

Demolish empowers and emphasizes Yorick's ability to split push and shred towers. If you're left alone by the enemy team you'll have the ability to take several towers if not responded to.

If the enemy laner has Teleported away and yours is on cooldown, don't be afraid to cast [R] in lane and let the Maiden tank the tower for your Ghouls/minions.

WhySecond Wind

Second Wind is the rune of choice in this slot if you're looking to fight and take a lot of trades during lane.

WhyOvergrowth

Overgrowth's scaling health bonus synergizes well with Yorick's build as well as empowers your ability to split push and take towers by improving your Demolish damage.

WhyThe Ultimate Hat

Ultimate Hat on Yorick massively bolsters your split pushing power by ensuring that your [R] is up every time that you're looking to take a tower and draw pressure.

WhyTranscendence

Transcendence's mid-game CDR let's you hit that crucial 40% in the mid-game with Tri-force and Spirit Visage for strong duels and tower-taking power.