armor runes + a cloth armor, blue buff and a level 3 drain should be enough for a slow dragon - I think.
Also, I changed my mind slightly.
The BUG FIX on his ult increases the utility of it by quite a bit (as in, ult, send the clone in, and at least it slows people while you're running around corners waiting to pounce).
However, on the other hand, I've become salty BECAUSE:
The damage and scaling nerf on jitbs weakens AP shaco's pushing power, which is the only reason in the world you would ever use AP shaco in a proper game.
Jack in the boxes are like hyper heimer turrets, deal 100% damage to turrets (on the lesser magic resist stat), and turrets will focus siege and melee minions before a jitb. 800 per jitb on a tower (being very easy to pull off the full duration) going down to 660 isn't that bad (hell the buff to allow it in the first place was pretty big and probably overpowered). They definitely need to give ap shaco something small now. Over all complacent.