Recommendations, oh wise ones

Hi reader. Im looking for a recommendation for a keyboard with the following specs:

Multi computer control Full keyboard Wireless with optional wire Has to work with mac Changeable keys, would like to put custom keys on it. Like little models etc. Backlit. And if it can do a fancy light show that would be nice. Proximity sensor would be nice. Usb port. A knob and screen would be nice

Can anyone suggest a keyboard.

Someone suggested a royal kludge