Fizz is basically one of the best mids in the game. Fizz is also the greatest towerdiver in the game. Fizz is very easy to play and hard to shutdown.

You need normal ap runes for fizz flat ap quints and glyphs, ap penetration marks and magic resist seals.

This build doesn't work all the time early game, but when it does your unstoppable. I like to start boots 3 with 3-4 dorans ring when i go back and if i can get ionian boots so my cooldowns are faster. Fill the last slot after you have your boots and 4 dorans rings with a neelessly large rod then build that into a rabadons(no selling yet). So you get the passive with the ap you have. then sell a dorans ring for a sheen repeat this basically until your full build is done feel free to sell the dorans for items with more ap.

Basically as Fizz you want to level your q first to max at 9 for that harrass your e is your get away so be sure to run in with your q jump with your e when tower diving.

Pros
[*] Easy to learn
[*] One of the best mids
[*] Never ban in games usally
[*] Snowballs after 3 kills
[*] Carrys mega hard
[*] Ult does tons of damage
Cons
[*] Squishy
[*] If not fed is useless
[*] If pushed to tower is useless
[*] Can't dish out tons of damage early