Pros
+ Can be played in most lanes
+ Great in teamfights
+ Solo Carry
+ High snowball potential
+ Great basic abilities with short cooldown
+ Doesn't need mana
Cons
- Very predictable
- Easily counterplayed
- Vulnerable to CC
- High skill cap
- High ban rate

Way of The Hunter (Passive)

Yone's every second attack deals 50% physical and 50% magical damage.
Yone's gains 2.5x crit chance but does 0.9x crit damage.
Yone can get 100% crit chance with just 2 items. With physical and magical damage from his auto attacks, his enemy will struggle to build defensive against Yone.

Mortal Steel (Q)

RANGE: 475 / 950
COOLDOWN: 4 − 1.33 (based on bonus attack speed)

Yone thrusts his sword in a targeted direction gaining a stack of Gathering Storm. If casting this ability at two stacks of Gathering Storm, Yone dashes in a direction, knocking up enemies hit.

Yone's Q is used for poking and cs'ing. His third Q is both his engage tool and escape tool.

Spirit Cleave

RANGE: 600

COOLDOWN: 16-6 (based on bonus attack speed)

AOE slash that damages and shields you upon damaging an enemy. Shield also increases depending on number of champions hit. Damage scales with enemy percent HP.

Deals decent damage and gives a shield, good for trades and avoiding poke.

Soul Unbound

RANGE: 300

SPEED: 1200

COOLDOWN: 22 / 19 / 16 / 13 / 10

Yone enters spirit form, getting ramping movement speed. Upon recasting or the spirit form ends,Yone repeats some damage dealt to champion as true damage and returns to his body.

Use this ability at a safer distance or area. This is your best ability as it gives you movement speed to chase and repeats dmg done to champions as true dmg. Using this ability before your third Q is ideal.

Fate Sealed

RANGE: 1000

CAST TIME: .75

COOLDOWN: 120 / 100 / 80

Yone blinks to a target location knocking up and pulling enemies caught in his path to his target location.

This ability is one of the best teamfight ultimates in the game, but if the enemy reacts and exits Fate Sealed's path, you will be very vulnerable. Pair this ability with your E and your third Q.

Doran Blade

Take doran blade against close-ranged matchups.

Doran Shield

Take Doran Shield for long-ranged matchups.

Immortal Shieldbow

Immortal Shieldbow is the best mythic for Yone. It provides a shield that helps you survive burst damage and the stats are great.

Infinity Edge

The powerspike item of Yone. After getting this with Shieldbow, you'll reach 100% crit chance and get an additional 35% crit damage bonus.

Mortal Reminder

Good against champions with a lot of healing.This should ideally be your 3rd item.

Death Dance

Death Dance is good against teams with a lot of AD burst damage. Get it as your 3rd item if you don't need Grevious Wounds.

Thornmail

Thornmail is good if you are behind and in need of sustainability. Buy this item as your 3rd item if the enemy has a lot of AD + AA champs and healing.

Bloodthirster

Go Bloodthirster as your third item if you have a gold lead and want to keep snowballing.

Spirit Visage

Spirit Visage helps against AP champions and boosts your overall healing. This item is greater if you have an enchanter support like Lulu or Soraka.

Guardian Angel

Who wouldn't want a second life? Go Guardian Angel as your last item.