This is my first Guide so please leave comments to help me improve some mistakes! n_n

first of all, this is a laning shaco.you have to play this build as an in/out champ in teamfight.Always try to kill first with your team help the champ with oracle, so you can do what you have to do. if they buy oracle all the time, you have to know: they are scare so you are doing good your job ;)
Always help your team becouse you are not rambo.
Please, try this build before vote =D THX
My english is not the best so, im sorry for that =D


They say that death isn't funny. It isn't, unless you're Shaco. He is Valoran's first fully-functioning homicidal comic; he jests until someone dies, and then he laughs. The figure that has come to be known as the Demon Jester is an enigma. No one still alive knows from whence he came. There are rumors, but one must not speak of them too loudly lest Shaco come to jest. It seems unimaginable that such a threatening figure would be allowed to remain at large. There are those that believe he is an assassin for hire, left to roam until he is needed. Others believe that Shaco is simply too clever, evading authorities at every turn. Still others believe that he is the demonic manifestation of humanity's dark urges, and therefore cannot be stopped.

''Whatever you do, don't tell him you missed the punch line.''

Deceive Deceive - Shaco stealths himself instantly and teleports to target location. His next attack is guaranteed to critically strike.
Shaco instantly stealths for 3.5 seconds, and teleports to target nearby location. If he attacks while stealthed, the attack is guaranteed to crit for 40/60/80/100/120% bonus physical damage.

Cost
90/80/70/60/50 Mana
Range
25000

Jack In The Box Jack In The Box - Shaco creates an animated Jack-in-the-Box at target location, which will wait, stealthed, to Fear nearby units and attack them when some come nearby.
Shaco creates a Jack in the Box at the target location. It will Stealth after 2 seconds, and pop out when an enemy comes near, fearing nearby enemies for 0.5/0.75/1/1.25/1.5 seconds and attacking them.

Its attacks deal 35/55/75/95/115 (+0.25) magic damage and it lasts for 90 seconds while stealthed or 5 seconds while firing.

Cost
50/55/60/65/70 Mana
Range
400

Two-Shiv Poison Two-Shiv Poison - Shaco's Shivs passively poison targets on hit, slowing them and applying a miss chance to minions. He can throw his Shivs to deal damage and poison the target.
Passive: Shaco's attacks poison his target, reducing their movement speed. If the target is a minion, it reduces their chance to hit by 20/22.5/25/27.5/30% for 2 seconds.

Active: Deals 40/80/120/160/200 (1+) magic damage to target enemy, and poisons them for 3 seconds. Upon activating this ability the passive is removed until Two-Shiv Poison becomes available again.

Cost
50/55/60/65/70 Mana
Range
625


HallucinateHallucinate - Shaco creates an illusion of himself near him, which can attack nearby enemies. (Deals half damage to turrets.) Upon death, it explodes, dealing damage to nearby enemies.
Shaco creates an illusion of himself nearby, which deals 75% of Shaco's damage and receives 150/150/150% increased damage. (Deals half damage to turrets.) On death, the illusion deals 300/450/600 (+1) magic damage to nearby enemies.

Lasts up to 18 seconds.

Cost
100/100/100 Mana
Range
500

Backstab Backstab - Shaco deals 20% bonus damage when striking a unit from behind.

well, there are things to talk about.
first of all, you can start with doran´s shild(prioritizing survivability) or doran´s blade(bit amount of damage, life, and life steal) but i prefer boots so u can start your build to get boot´s of mobility sooner.

some people say that snowball items(sword of the occult in this case) is not ok, becouse the game could not going how you would like, so you cant stack your item as you want it, in the case you dont like it, you can move on and buy B.F. sword but with shaco(if plays well) you can stack it, because you will gank all the time , almost assist.

when you get the boots, the sword of occult(with few stacks), infinity edge, phantom dancer, and the bloodthirster you´ll be dealing good amount of damage.
late game you have to think in survivability, i think that frozen mallet gives you good amount of life, a bit damage, and the passive, wich is great to slow. you will start with the phage and then finish the frozen mallet. now you need MR and the best item i found best is banshees veil(great passive also when riot increase the time 45 from 30 sec) or guardian angel, if you need more def or magic resist, Also trinity force could be ok, becouse it gives you a health, mana, crit, etc.

IMPORTANT: always try to gank with red and blue buff, not just for you, also for the team against so they cant have them, always pay attention to them, even more when in the other team are junglers.
Use your boxes all the time, also when you recall try to put one beside you, so if someone comes the fear gives you 0.5 sec to deceive and scape.

you can change your runes if you want, but i use armor pen, crit dmg and coldown reduction because i think is the best way, but attack speed or dodge(here u have to get ninja tabi and change masteries trees to get point on def) are good choose too.

in general,smite flash and exhaust are the best option.

exhaust gives you one sure kill using it in the right time

flash is awsome, it helps you for deffensive and for offensive, also when you need to get out of a team fight quickly and deceive still cooldown.

smite helps you to kill neutral moster fast.