"Untargettable" -> Can it work properly please ?
As far as I know, being untargettable doesn't mean being invulnerable to targetted spell launched before the "untargettable" skill, same goes for towers. You shouldn't be able to "dodge" a tower shot thrown at you if you use the "untargettable" spell while you're being shot, and not before, same as some targetted abilities, my 
E damage shouldn't disappear because the 
used E while I was casting it (meaning the animation actually reached the Fizz)
I believe it's one of the reasons this mechanic is hated so much
I WAS IN ALPHA 
's new Shroud works with Tower shots: It won't target her, but if it fires at her, she will still get hit if she enters her shroud afterward.
R
E
Q
untargettable and invul. Basically they disappear off the map
Fizz is really fucked up bc he's not really registered on the map yet you can still see him
R doesn't apply and he can still die tho. He's still on the map, just flying above it