Hello people of mobafire,
welcome to my first guide.
Now you would think: Why shaco it isnt even strong?
WELL YOU ARE WRONG

But Kappa King why isn't shaco 100% pick/ban in the lcs?
Because RIOT said shaco is a jungler. Now people only play him top and mid as other roles.
Where he shines is Support.

Is shaco support even viable?
Indeed. I will now give you 3 reasons why:
1) Strongest level 1 (if you utilize your boxes)
They have a blitzcrank and want to invade? Set some defensive boxes -> free kills or at least no deaths in your team
Deny their level 2: set some boxes into the route of the enemy (works best on top(purple side, free kills with 4 boxes in tri)
OR be a nice guy and carry your jungler with your boxes
2) boxes = armed wards -> hardest lane to gank if you use your boxes and normal words to deny his ganking
3) loads of cc in teamfights, boxes for escape, boxes on your carry to deny engages, slow on e, boxes after your ult in the enemy team.

What is bad though?
Setup - You need some time to set your boxes or you won't have as much cc and damage.
Falling behind - You cannot really help your adc with anything, except preventing engages and zoning. If they poke hard and you die early without getting anything it can be hard to come back to actually be able to zone properly.

You dont do your damage. Your boxes do.
You dont cc the enemy. Your boxes do.
So place them everywhere.
At start? place a box to counter invades.
then go to the route the enemy bot will take and place some boxes. Most likely they will go down to half hp or smt because of the boxes (specially if you can box the tribush and the way towards it).
Then place boxes in the bush where the wave is. And 1 ward box.

In teamfight: place an escape box.
Place a box on your carries.
Optional:Try to place a box on thier escape way.
Use your ult - run to their carry let it die ->zoning ez af.
Use your boxes on cd in teamfights to deny them setting up properly and fighting without interruption (AOE FEAR OP).

Use your e on low hp targets or if your carry gets chased.
Q if you get low or as substitute to flash + a small damage boost.

HAVE FUN WITH GAINING ELO EASY AF WITH THE STRONGEST SUPPORT EVER.

Why max w?
your boxes > You so you need to buff them as much as possible (hence 45% cdr)
Blue gold item doesnt proc on your box?
Thats the sadest downside of shaco support, would be amazing to farm enemies and money with your boxes procing that.
Are you a troll?
Maybe, but if you play shaco support they will more often than not call you out for "trolling". Even though its a totally valid pick.
What is your elo?
Bronze V (EUW - The Kappa King)