Fizz is a very mobile and carry heavy champion, and requires little assistance from his team in order to carry. He may have his counters, but can easily out damage them mid to late game, and outscale most(if not all) champions

Fizz OP

I use these runes because it gives a perfect amount of damage and resistance. Even if the enemy team is all Physical or all Magic, they're bound to do some mix damage with their spells. This is the safe rune page

Fizz's build can differ from game to game, such as I needed to build a Guardian Angel because their team was carry heavy, and all my damage would go to waste if I continued to die. I would recommend DFG instead of Guardian Angel, it makes killing tanks a breeze. Make sure after ~30 ish minutes you take a red scanner so you can catch someone out with your combo. Catching someone out late game, can win almost every game especially if the enemy team is fed.

I like to take 21/9/0 in order to deal Tons of damage (TriForce not included)

Pros
-Amazing Lategame
-Only needs DFG to do damage
-Tanks are a joke to him
-His Trickster ability saves your life
-Medium Skillcap

Cons
-Gets poked in lane
-Gets focused like crazy, especially if fed
-Hard to farm with early game
-He eats mana
-He's 2 feet tall

Team work? That's a joke with fizz, his team is literally all body bags for him. You usually want to wait until their ADC is in fish range and destroy them with your combo. From then on, the team fight will be a breeze, and yet your team will still die somehow. And there's your chance for a Pentakiil!