Swain is actually a fairly even Champ. He isn't OP he's in that just right zone. Right now however, people don't know how to counter him so they are going to say he is OP. In a way he plays very similar to Cho, this is because of his stun. Most people really suck at those kinds of skill shots, so it makes me happy when I play him. He has some good CC (His bird slow and immobilize) and he has a mini ignite, when coupled with ignite, it makes for some pain. But a lot of his damage is over time, so you have to be careful. His ult, his ult is beast. Literally.
I seem to have lost my pie cutter.