Hello my name is Trallie and this is my guide to Shen, the chain warden.
Please do not downvote this guide until you have tried it in-game!

Greater Mark of Attack Speed These runes give you attack speed, which we need to stab people A LOT faster.

Greater Seal of Armor We need these to block enemies stabbing us.

Greater Glyph of Scaling Magic Resist We need these to avoid magical attacks, magical attacks can stop us from stabbing the enemy.

Greater Quintessence of Movement Speed We need these to run faster so we can stab while we run.

Boots

Health Potion

We start with these to avoid stab attacks and if we get stabbed we can heal it back.

CORE

Statikk Shiv

We get this so we can stab people A LOT FASTER, and also apply lightning damage inside them, since we will be stabbing a lot this will apply a lot of lightning, forgetting to buy this you will go 0/10/1

Phantom Dancer

This item is a must, it gives you TWO blades with stattik shiv that means you have 5 blades! that means you can stab people A LOT MORE OMG 20/1/10 with it, 0/20/1 without it.

Malady

This allows you to stab enemies with extra side-effects to go rampage mode on them. This burns right trough them

Berserker's Greaves

These allow you to walk faster and stab the enemy MUCH faster this also helps getting more Statikk Shiv procs.

Sword of the Divine

Same as Berserker's Greaves BUT this also grants you burst potential which is extremely nice.

Trinity Force

This gives you every stat you need, even though the mana is wasted it is still worth the cash!

You don't have to know why I pick these, they mean you instantly win so don't question me.

We max out our Vorpal Blade because it can penetrate someone's heart.

Best choices

Barrier To protect us from counter-stabbing
Heal If we get counter-stabbed we can heal back up

Decent choices
Revive If you die you can come back to stab them down once again
Ignite This can be used to burn the enemy all the way to the ground

When I reach level 30 I will update this.

Pro's
Can stab people with great speed
Very strong compared to everybody
Wins the game usually
Global teleport to save your noobs
Easy to master
Can force the enemy to stab you with weaker stab attacks

Cons
Can't see Shen well because light can't catch him

Stab them at the right moment to kill them.
You can use Vorpal Blade to penetrate their hearts.

This is the plan:
Your team goes in but you stay in the back
They all weaken the enemy but they die.
You come in and make a penta-kill and take a tower.
Repeat to win

To farm all you need is a hoe, fertilized ground, water and some seeds.
Plant the seeds and wait for them to grow.
Harvest the materials and repeat.

Shen is super unique, just like Kayle