I've made no such implict admission about the role of the supernatural in evolution; you have a misconception about how evolution occurs.
The mechanism for evolution is chiefly natural selection; that which gets to breed passes the characteristics that enabled it to breed on to the next generation. Even a feature confering a 5% reproductive advantage can spread through a population of organisms in a few hundred generations.
This is not a random process, it's a process where the environment the organism is in the organism interact. SOme features may arrise through mutation, which is an effectively random process, but this random process is not evolution, it's mutation.
The evolution is in the survival of the fittest. A rock in a stream is not shaped by random processes, but by what it is made of and the movement of water around it. That is why rocks that remain in the same place on a stream's bed are shaped by the current. If it was a random process, they would be randomly shaped. It's just the same with evolution; what is is what fits best in the environment, everything else didn't have enough babies to still be around.
You also seem to miss the fallacy of designers needing designers too, by focusing on apparently complex objects and saying they need designers, when you have no idea how the eye designer came about.
I suggest you read up on some evolution; you have misconceptions about it which mean discussion on the topic would be dominated by your misconceptions being corrected. Try http://www.talkorigins.org/ as a starting point.