Hello my name is Mr.Monkey and i am from Denmark. I made this guide because there really aint that many good shaco guides. In this guide I will show you how you can really OWN with Shaco.
ARP = Armor penetration.
CDR = Cooldown reduction.
ARM = Armor.
MgR = Magic resist
AD = Attack damage
DMG = Damage
MGP = Magic penetration

Pros:
Exellent 1v1
Get really fed if played correctly
Free low Cd flash (decieve)
long range slow Two shiv poison
Cons:
Squishy early game/team fights
High Cd
can easily be cc"ed down

My Runes are pretty normal for a squishy carry,
I take ARP Marks, for coming closer to deal true DMG Which can help you out, big time
I find ARP more usefull than AD because that AD only grants u more DMG, that can easily be countered with ARM. Or if you lane vs tanky champs like MalphiteYou will deal 0 Dmg with your basic attacks so there the ARP is much better because it makes you ignore 14 ARM!!
I take these over MGP because MGP only stacks with your E.

I take MgR and ARM seals because early game you are a little, squishy. That can help if you are in lane vs some hardcore DMG champs like Vayne or Tryndamere you will go down like a noob.
If you are vs only AD carrys then you should only take ARM and the same with MgR.

I take CDR Glyphs because more Boxes = More kills. And because your decievecan really save your butt in a emergency.

And finnaly i take AD Quints because they stack really well with your E

I take a not so standard 22-0-8 because u really need the improved Igniteand u dont really need increased buffs or Mana Regen.

My Finishing items are Boots of Mobility,
wriggles lanternPhantom Dancer,
infinity edge, hextech gunbladeand another phantom dancer

I take boxes first, because they are just awesome, but i max it late because that your E deals more dmg and the boxes are really hard to place well. (If u play vs or as Shaco you will know how stupid it is to follow him into a brush). so when you cant bait your enemies into following you, ou must place them out of brush but then they will be triggered by minions, so you gotta plce it along the river if you want to get any proper kills.
Althoug i admit that i once got a kill with my boxes vs a lee sin and his q.

i take exhaustand igniteto kill the enemies real quick

Fx. Place 3 boxes in a brush run up take some tower hits then run back into the brush and wait for the enemy to follow, exhaust and ignite, then he will fall like a fly.

we have discussed many things in this guide and it is my first so dont be to harsh on me guys, thumbs up