I have been using this build for more than a year now and I can tell you one thing that this should become the new standard ap support shaco build.
Right now my main account is sitting on 2000 LP Challenger with 59% wr on shaco while my alt account is sitting on 1300 LP GM with 74% wr on shaco.
One thing I need to clarify first this build is focus on support shaco only not other roles
Let me tell my fellow ap support shaco players something real quick. Something we all already know since we get ourselves into this playstyle.
AP Shaco sucks at early game. Like he's completely useless no matter how you spin it ,sure you can get prior in some really rare matchups but that's not enough.
And you know why that's the case ?
Because everyone keeps building with the same mindset that ap shaco is a weak early champion (BFT, Malignance, Mandate,...). I know these builds are great as standard first item builds as you can take over your game most of the times when you reach your Core Item Liandry.
But the problem is within the build itself how do you even get to your core item when you have zero pressure in lane and early teamfights (don't even tell me you need to prepare boxes for objectives in advance as 1 or 2 sweepers is enough to wipe your damage source completely)
Lemme clear something first I have built BFT since its official release and was once and for a long time a casual scale late win game shaco player. So don't come here and tell me I don't know how to use scale builds.I even tried tear start into Liandry to get to ap shaco's power spike earlier. And ofc Liandry start is just a dumb idea as you will have no mana to even place the boxes let alone use your entire kit.
Now for my second point on why casual builds sucks
You have to rely too much on boxes and teammates. That's literally your only reliable damage source as your E damage is just a joke because by the time you get 5 points onto it the game is over and your R is basically a gamble against your enemies intelligent.(Even if you pull your clone from fog of war it's still a gamble if the enemies mess up their position in teamfight or not as a high elo lobby will not allow that to happen easily.)
So to fix this issue I have come up with a really simple solution. Push AP Shaco's lane pressure to the max.
To start off I need to talk about dark harvest. This rune is both an early damage rune and at the same time a scale rune. Combine with Haste, Ultimate Hunter and Liandry as second item you can actually out scale BFT build by miles.
Now, to actually win early game fights and get really high prior for your lane you will need the combination of Dark Harvest, Sudden Impact and Cut Down.
To push this lead further instead of going BFT and waste your early game strength you will need Luden's.
Lemme tell you why Luden's is so strong as a first item for ap shaco. Luden's damage is really high early on and for the whole match it will instantly bring the enemies down to the point where you can get a DH stack or just straight up kill them on the spot as the damage is surprisingly disgusting.
Now, I will introduce you to the second reason why Luden's is better than BFT. Like I said above the damage from Luden's is instant so you can always get DH stack by proccing it with your support item Zak Zak. While BFT damage is DOT which means even when you hit your E on a low hp enemy and proccing Zak Zak you will not get a DH stack most of the time because the damage is not instant. And this goes the same for boxes as well.
Finally, to give this build a final but most important push I will need to change the skill order as well.
1.I always start Q for lane pressure and believe it or not shaco win every matchups with DH let it be double range, pokes, enchanters, tanks or off-meta picks as long as you understand how to control the bushes with sweeper and use them for trades. And don't just blindly Q in. Q in as your enemies use one of theirs skill on you so you can buffer/dodge and backstab them then force the trade with your adc or just fall back if your adc cannot follow up (which most of the time is your fault for not finding angle to trade efficiently with your adc CD)
2.Most of the times I put 2 points into E on level 3 (Put 1 point into W for hook matchups)
The reason for this is that level 1 W is a waste of mana and do absolutely nothing against range champion or matchups where their support start with a sweeper.
And the damage from 2 points-E is really high and will for sure catch the enemies by surprised
3.After laning phase I will have 2 options:
E Max or W Max
With E Max you don't have to rely solely on your boxes and clone for damage.Instead you have a point and click nuke with the combination of everything you have been building up till now
DH stacks + Luden's burst damage + Liandry Burn + Zak Zak + Cut down + Sudden Impact
And don't even worry about boxes damage they still deal a lot of damage because their main damage source come from Liandry (which will be available way sooner because of your early game pressure) and that's more than enough to take over mid-late game.
Then we have W max with 3 points into E.
W max is better when your team already has too much damage and you need more boxes for objective fights but don't worry your E still hurts like hell with the same formula as above.
Lastly, I will need to talk about third and fourth item slots
1.If you are in the position of being able to snowball the game (which will actually happen quite a lot because of this build) you can rush Rabadon into Shadow Flame or if you don't have enough money for your next fight you can build Shadow Flame's components, complete the item and head for Rabadon or Imperial Mandate
2.If the game is stable Imperial Mandate is more preferable as this item is actually quite OP considering its price and the cdr it gives rn.
3.Consider building Hour glass as third item when the enemies has too much burst as you already have more than enough damage from your first 2 items and runes.
Instead of only being a Control Support with the casual cdr build you can become both a Poke, Control Support and even Become the carry with this build.
That's all I have for now I give my thanks to anyone who read it all the way through.
I will answer every questions about this topic but please be respectful and logical when commenting or else I won't reply to your comments.
And for the last time this build is for ap shaco support don't tell me if it doesn't work elsewhere because it was not designed to do so.
;)