I had an idea just now. Something I want to make. My question is this... Does master have a fish eye lens? Or is there a way to set the camera to do that?

As far as I can see, no.
But you may be able to do a work around
using a fully reflective sphere in front of the camera.

edit: So, the camera would be pointing away from your scene.

Just adjust the focal length in your camera settings.....

Post-processsing the render + short focal length will give you the look quickly and effectively.

Depending on how accurate you want the fisheye effect to be, setting the camera's focal length way low (i.e. 4) may do it. Things don't bulge quite the way they do with a real fisheye, but if you're not going for extreme effects it might be okay.

Thanks for the ideas.... but I think I will be building the model distorted to create the effect I'm going for.