[jitter] Crossfading between more than 2 matrix's

I know xfade only works with two inputs but is it possible to make it work with more. Or is there anything that can.
I dont so much want to overlay 4 diffrent videos on each other rather i want it so i can have a possible 4 diffrent videos overlaying the main video.
Either that is there some sorta jitter gate object so that the xfade only gets a signal when one is coming through


Thanks