Hi guys! This build will show you how to dominate any lane on blind pick. Hope it'll be useful!

For runes I prefer using life steal quintesencess, AD marks, Attack speed seals and armor glyphs. It's best if you use AD per level runes since they'll give you a great advantage in mid-game.

I start with Doran's Blade since it gives you 10 AD, 3% lifesteal(with masteries and runes you'll have 12% lifesteal when you start which will allow you to stay on your lane even if you lose hp) and 80hp which makes you a bit less squishy. Buy attack speed boots since you're not jungling and you don't need mobility. After that I go for Sheen(start with mana crystal since you run out of mana on low levels alot) so that I deal critical damage from decieve + bonus damage from Sheen's passive!(This is Shaco's highest damage output so learn how to use it properly!). After that i go with Zeal and start with a dagger to get more attack speed. When I finish Zeal I'll gain bonus movement speed, crit chance and attack speed(movement speed is most important though). Then I go for Phage(start with a long sword or hp crystal depends on how good you're doing). Then finish Trinity Force. When you finish Tryinity Force you'll notice that Decieve deals a huge amount of damage! After that go for vampiric scepter to gain more lifesteal. Go for Infinity Edge and your Decieve will deal even more damage. After that go for Phantom dancer to gain more movement speed, attack speed and crit chance! Then buy a B. F. Sword and finish Bloodthirster. For the last item I buy Frozen Mallet(it's no neccessarily to buy it you can go for another item if it suits you better). I buy Frozen Mallet mostly because of it's hp boost and passive.

Level up decieve first since it's shaco's highest damage ability. After that level up Two-Shiv Poison which deals more damage the more Ad and Ap you have + slows your enemies. After that max Jack in the Box since it won't help you alot because you're not AP the only thing you'll need him for is escaping or fearing enemies that are running to get a kill!

Use ghost because it'll help you escape or keep up with your enemies anytime! And use exhaust to slow your enemies and lower their damage dramatically!