Stay with your team as much as possible. Only gank bot if your team is fragmented after a battle for example. However, if you see three of your teammates grouped top you need to be there to make it four of you. Know which characters you can burst down and which you can't so you can choose your engagements carefully. Sometimes you will have to backdoor the node adjacent to Windmill. Even if you can't finish capping it you can pull off one of the enemy champions from Windmill or stop the nexus bleed by making the point neutral. Don't stress out this is how Shaco does his part. Judgement calls will make or break you just use your common sense. Do not let this build stop your game from evolving. This is just a basic outline that you can refer too when you are thinking about a strategy.

Dominion is a far more fast paced game type than SR which makes for a unique experience. The items in this build for Shaco are a reflection of his necessities in dominion. It helps a lot if you have played Ap Shaco because then you understand box placement. Ad is superior to Ap because the tools Shaco has are utilized best as Ad. For example the clone benefits from all your items. This means that you can sit back and watch as your clone solo's champions. Then again you could engage with your clone which almost doubles your damage output. Work with your team and you will excel as Ad Shaco.

The crit runes Greater Mark of Critical Chance and Greater Seal of Critical Chance in this build help provide a steady increase in DPS over the course of the game.
While the critdmg runes Greater Glyph of Critical Damage and the Greater Quintessence of Critical Damage increase his deceive damage and later on his critical strikes from basic attacks. You have 52% crit once you have made Trinity Force and Infinity Edge with runes.

What can I say about these Masteries, I pick up all of the talents that are beneficial to Ad in Offense then move over to utility. I pick up Improved Recall because there are times when you will need to make a speedy escape unless you would rather turret dive against the three champs that just took top. Good Hands can make the difference between stopping a cap or having the opposing team cap your mid and spawn camp you. Finally the movement speed from Swiftness , this will help you stay out of those situation were you are a hair away from hitting someone in the back with Decieve.

This item build is designed to be efficient whether you finish it or not. Berserker's Greaves and Vampiric Scepter are taken at the start. Next build 2 Phantom Dancer's since attack speed and crit is the best way to increase your damage output in the beginning. The movement speed when combined with Two-Shiv Poison allows you to normally stay on your target. Follow up with Infinity Edge, build the attack damage portions first. To maximize your damage output if you have the time finish up with Black Cleaver and Sanguine Blade.

Deceive is maxed first because it is a good portion of your DPS. Taking the time to get behind your targets increases your DPS substantially. After Deceive I max Two-Shiv Poison because the slow is sometimes is extremely important. Even though the increase to the slow is small it still helps quite a bit. Two-Shiv Poison can be thrown to burst a target down or slow them. It's up to you to make that call every time you engage. Jack In The Box is maxed last because you won't normally get more than one person to run into a Jack in the Box. The .5 second fear is enough to still give you an edge in battle. When you engage a opponent sometimes dropping a Jack In The Box can be the difference between living or dying. Hallucinate is the best trick you have up your sleeve. The clone can be used in two manners. The first is to pop the clone after you open with deceive to help burst down your target. The second way to use the clone is to simply send it in alone. This allows the clone to slow your target to keep them away from so you as well as do some damage to your opponent. If you don't already know if you hold alt and right click it allows you to move your clone. As long as Two-Shiv Poison is up the clone will have a slow. Once again the clone does benefit from your items. The clone can do some dirty work don't underestimate it.

Exhaust and Ghost are standard summoner spells for melee Ad characters. These two spells have good synergy. The ability to slow a champion while increasing the speed of yours is a invaluable tool. A lot of Shaco's like to roll with Ignite however, Exhaust is the way to go if you are Ad. Plus Exhaust is great tool to level the playing field if for example you have only half of bar of health. Exhaust is also there when you need to guarantee that your target will go down.
Ghost is a great summoner spell, one of my favorite tricks is to Decieve and pop Ghost. They never see it coming when you strike.

There are a lot of judgement calls with Shaco you need to be aware of what's going on and know how to respond. Shaco is a powerful character with a lot of potential. I hope this guide was informative.

Have Fun,

Null Eos