Hello my fellow Shaco mains (those who still didn't give up on him after his rework :D).
My summoner name is "7xXGlaedrXx7" and I'm a Diamond V Shaco main.
I hope you enjoyed my guide so far.
In the following paragraphs I will talk a bit about my playstyle (and such) with Shaco.

When you play Shaco it is really important to leave your base at 0:15 so you can place one box at the entry of your jungle.

-> Invades will no longer surprise you
-> It is likely that your enemys won't invade anymore when they activate the box

I'm starting at the blue buff and place my first box at 0:48.
Then I place the next 2 in a triangle and the 4th box when the buff has already spawned.

-> You will get multiple fears

Then my route is usually : Gromp -> Wolves -> Red Buff -> Birds (= lv 4, time to gank!)

Tip: Make use of your passive by kiting back and forth

Your main goal is to snowball as early as possible. Therefore ganking a lot is necessary, but also don't forget to farm. 100 cs at 20mins is a good score for example. To keep your cs up plan where you wan't to gank and do jungle camps on your way to the lane (for example).

Another strategy with Shaco is counter jungling. Whenever you see the enemy jungler ganking on the other side of the map and you are not in a position to counter gank somewhere else rush into his jungle.

Furthermore you should always try to get turrets if possible after a successful gank.

When your team starts to group in mid/lategame don't splitpush (only if you are already splitting, then continue) ! Instead try to not show yourself to the enemys and stay nearby your team, always seeking for a nice stealth Q on the enemy Adc or a squishy member.

Pre 35 minutes it will be harder for you to make huge teamfight impacts because the supps mostly finished their major items and can protect their adc very well.
This is probably the hardest time to win a game with Shaco, but if you don't want to rely on your team making plays try to seek for enemy mistakes. For example an adc out of position.

This concludes my Season 7 Shaco guide.