Swain's a tough matchup for Fizz, especially as far as AP casters go. He's got nice sustain and poke, plus a tough to dodge root. Swain's ult is also a nice counter to Fizz, since the Tidal Trickster 1. has low health and zero sustain and 2. needs to get so close to Swain to do damage.
Fizz is a strong enough champion that I could see him winning,but I believe Swain has the advantage here.
Quote:The difference between Fizz and Swain is that one is built for roaming, the other is built for farming. Swain farms like a boss. Fizz farms champions like a boss.
Any decent Fizz will not even attempt to force a mid kill against Swain unless he has jungle help or Swain is bad.
Fizz will roam bottom/top/enemy jungle and pick up a few kills there. In the meantime, Swain continues farming mid.
In the end, Fizz and Swain come out with nearly the same amount of gold, except Swain has double Fizz's farm and seems to think hes superior.
The difference is that Swain's team is losing other lanes due to Fizz's help, and Swain is simply farming alone mid.
Honestly, I fear a fed Fizz more than a fed Swain, simply due to the fact that a fully built Fizz can one shot the enemy ADC, and one combo Swain. Swain can build tanky, but it won't be enough versus a good Fizz who got his team ahead.
Quote:I found the best way for a fizz to beat swain is almost the opposite. you poke EVERYTIME you can. Dash in stick it to swain pole out safely.
And as the above poster mentioned, Q+E takes a lot of mana (at least 140, and this is without using W at all, which would add another 40).