I actually think Shaco is pretty likely to get an ASU. Reading this post, it sounds like Shaco is exactly who they’re describing.
The only move that’s changeable on Shaco without killing his identity is his E, and even then I can see a lot of mains being unhappy. He’s also one of the oldest champs with very few voice lines and next to no lore. ASUs were made for champs like him.
One support build you could try:
frostfang - Zeke- Ion boots or swiftness- Sunfire- thormnail- abyssal
The runes for this build depends on you i played it with these
but you could try the normal runes you take to.
Doesn't seem that weird : https://www.leagueoflegends.com/en-us/news/game-updates/patch-11-23-notes/#hextech-drake
tl;dr : first attack makes some chain lightning with hextech soul
I can also see the boundary in u/Extasion's link.
Maybe it's an issue with compression on Paint's end?
If you ever take another crack at it, and need some free photo editing software, I used to use pixlr.com/e/ a bunch when I didn't have access to PS and the like. It can export in full png with transparency, so you wouldn't have to worry about color matching/compression shenanigans!