User blog comment:Supp0rt4n00bz/Some Champs need a nerf!/@comment-8152061-20130521110322/@comment-8506165-20130522191346

Fizz counters Swain pretty hard because Swain's thing against burst mids is being beefy enough to survive an initial burst from someone and then get all the health back from Ravenous Flock quickly, but Fizz applies Grievous Wounds with his W and reduces all self-healing. It's like laning against someone who starts with a Morellonomicon.

He's not very mobile so against someone who can mess up his self-healing he's probably in trouble. I imagine the key to beating Fizz as Swain is being good with Nevermove. He finds Kassadin a bit easier than most AP mids because so long as he has R already on when he gets silenced he can still put out damage.