Hey there! Thanks again for the help everyone. I think I'll just close this thread.
I couldn't really wrap my head around the ideas written out, and with that last screenshot I'd search through Stencyl but I couldn't find those exact blocks, so I wasn't able to even really try it out myself. X3 I'm sorry!

I went with something more like this. I have a list for the x coordinates and the y coordinates separately. And I set a Number Attribute to a random number, and then take that number from the list before it goes and plucks another thing from the list.
I do have an issue I'm trying to work out with it because there are like 4 of the same for each x and y position on both lists, so it's possible for it to randomly pick the same location for two cards. So currently I've split up the lists into segments, so it won't be possible for it to pick the same location for different cards.
BUT I still want to make it completely random - the way I have it now, the x positions are always going to be the same for these, and only the y positions will be random. So I'll just need to do a bit more to find out how to get them both a bit more random, and I should be able to handle it on my own.
So thanks again for the help! Sorry that I just figured out my own sorta way, but that's a good thing around here too!
