Good ol' troll poll, another thread about it.
No doubt the most toxic part of his low counterplay kit.
Urchin strike (his q) is pretty toxic too, but its the troll poll that makes him bullshit.
Q in, auto with enhanced aa from W, E+Q to get out.
One of the worst problems with Fizz is his low cooldowns, most assassins do burst damage, and have limited gap closing. With Fizz, if he gets on you, you cant get away, he dose as much damage as other assassins, and dose a much better job of sustained damage than most. His passive and troll poll make him difficult to focus down too.
Fizz isnt healthy, never has been, compare to Talon. Talon maybe instagibs one squishy, has a one way targeted gap closer, one escape mechanic on his ult, longer cooldowns for a longer time between burst. Yet, Talon can still be a very good assassin. If you get in too deep on Talon, and you used your ult to initiate... your screwed, price of being Talon. Better hope you can walk out of there, or your flash is up.
Fizz, oh you got in too deep, Zhonya active, Q out, troll poll, q out.
Fizz is like LeBlanc, hard to balance, poor kit design with too much escape for the damage it gets to do.