Riot, the change you're making to Shaco's E is NOT buffing AD Assassin Shaco
In fact not only are you getting rid of AP shaco by doing this you're hurting him even more.
A huge thing about Shaco that not many people realized is that his abilities dealt MAGIC damage. A lot of times people would rush armor vs him and wonder why he did so much damage when they had 0 magic resistance, by turning his E (shiv) into physical damage (yes the buffed up execute damage is nice) you're hindering him even more making it a lot easier to build against him.
You changed the jungle spawn times making his early game cheese tactics no more You let lee sin/ivern/graves etc. run rampant in the jungle making it difficult to even play Shaco You basically took away what he was good for (his early game pressure) Then nerfed it even harder AP shaco became the go to and got nerfed even more Assassin shaco became obsolete so we went with bruiser and that got nerfed Now you're nerfing both ap and ad shaco again. You made countering assassin stupidly easy by buffing Death's Dance and Veil and allowing ADC's to get GA far easier.
Shaco is on his last leg leave him alone.
Two-Shiv Poison (E) Base Damage changed from 5/35/65/95/125 to 50/75/100/125/150 AD Ratio changed from [75% total AD] to [60/75/90/105/120% bonus AD] Damage type changed from magic to physical [new] Now deal up to 50% additional damage based on target's missing health [removed] No longer deals 3 - 8% missing health damage based on character level
Why does Shaco, who was perfectly fine (arguably one of the weakest champs pre and post rework), keep getting hit with nerfs for doing EXACTLY what he was intended to do? Kill squishies who didn't position correctly. Yet Lee Sin is allowed to run around and do everything better than everyone. Riven is allowed to have more CC and a better shield than half the tanks in the game while still out damaging some assassins.
You even said in a post you don't like the damage Shaco does when coming out of stealth. Yet Wukong/Kha'zix/Rengar are all doing it far better and still allowed to do it.
What do you have against Shaco?
due to needing to keep boxes up for both the enemy laner and jungler)