This is not a buff.
Riot is doing this "rework" to essentially nerf Shaco, and make AP Shaco useless yet again
Added an AOE effect on the boxes and an instant fear on his R boxes just to utterly gut his damage, on both his E and his R, also the ratios went down slightly.
And his Q went from 4.5 seconds in total, to just 3.5, albeit with a lower CD. They also removed the AP ratio
Stop classifying these changes as a buff. Shaco's gonna be garbage after these changes